SAT Reading & Writing study guide · Chapter 4
Words for Change and Relationships
SUPPLEMENTAL LANGUAGE
Academic passages often use a specific verb to signal the kind or direction of change. Some verbs also imply degree or mechanism, but many do not. These words show up constantly in science, history, and social-science passages, where the exact sense can control a Words in Context answer.
Words for Increasing Strength or Amount
Augment means to increase something by adding to what is already present, whether the object is quantity, capacity, or effect. Amplify means to increase strength or magnitude, often applied to a signal, an effect, or a difference. Accentuate means to make a feature or contrast more noticeable, which is a different job from simply making something larger. Intensify means to make an existing condition or process stronger, without saying whether that is good or bad. Exacerbate means make a problem, condition, or negative situation worse; intensify means make something stronger or more extreme without requiring it to be negative.
Heighten and enhance both describe increase, but heighten usually applies to a degree, a sensitivity, or a tension, while enhance usually applies to quality or effectiveness. Compound is not about causing a problem. It means adding to a problem that already exists, so the difficulty or effect becomes greater than it was.
A design flaw already slows the assembly line. A supplier shortage compounds the delay, adding a second cause on top of the first. The shortage did not create the original problem. It made an existing one worse.
A public health message states a real risk plainly. A second version of the same message uses more urgent language and vivid imagery. The second version does not add new information. It accentuates the same risk that was already there.
To amass is to gather or accumulate something, usually a large quantity, over time; a collector amasses a body of evidence without any claim about how the growth happened. To burgeon is to grow or increase rapidly, a claim specifically about the pace of growth, not the eventual size. To fluctuate is to vary irregularly, rising and falling instead of moving steadily in one direction. To buttress is to support or strengthen an existing argument or structure, adding reinforcement to something already standing instead of creating it from nothing.
Degrees of Reduction
Diminish means to make or become smaller or less important, without specifying a mechanism. Attenuate is more specific: it reduces the strength or concentration of something without necessarily eliminating it, and mixing up attenuate with eliminate is one of the most common errors in this family. Mitigate reduces the severity or harm of a problem. The problem itself can remain after it has been mitigated.
Ameliorate and alleviate both improve a bad situation, but they emphasize different things: ameliorate focuses on the condition getting better, alleviate focuses on relieving its burden or severity. Both describe improvement or relief, while augment describes an increase in amount or capacity, a different kind of change entirely, and a passage testing ameliorate against augment is really testing whether the sentence needs a claim about a situation improving or a claim about a quantity growing. Abate describes something, often itself, becoming less intense after having been stronger. Moderate pulls something back from an extreme, without implying the change is toward less harm specifically.
Curtail and suppress both cut something back. Curtail reduces the extent, duration, or amount of an activity. Suppress holds something down or prevents its expression, which can mean it still exists below the surface.
To amend is to make a specific, limited change to a document, policy, or statement, correcting or updating one part instead of overhauling the whole; a committee amends a single clause in a contract. To rectify is to correct something so it becomes right or accurate, typically an error, injustice, or imbalance, not a piece of formal text. Redressing a wrong means taking action to correct or make up for a specific harm someone has suffered, closer to remedy than to simple correction. Thwarted describes a plan or attempt that was prevented from succeeding, a claim about a specific effort blocked, not about the underlying goal being shown wrong.
A filter attenuates background noise in a recording. The noise is reduced in strength. It has not been eliminated, and a sensitive listener can still detect it underneath the cleaned signal.
A new regulation is designed to mitigate the health risks of a chemical already in wide use. The regulation does not remove the chemical. It reduces the harm that follows from continued exposure.
Attrition reduces a group gradually through loss or departure, not through a single deliberate cut; a company that shrinks its workforce by attrition lets positions go unfilled as people leave, instead of laying anyone off directly. To excise is to cut something out entirely and deliberately, most often a passage, clause, or provision; an editor excises a paragraph, while attrition describes a slower, less directed kind of loss.
Words for Enabling an Outcome
Facilitate makes a process easier or more likely to proceed, without itself causing that process to happen. Foster encourages the gradual development of something over time. Induce means cause or bring about a response or state, often through a specific intervention. Catalyze triggers or speeds up a process without being identical to the process itself, and something can catalyze a change without constituting that change.
Elicit means to draw out a response that is produced by something else; a stimulus elicits a response, but the organism produces it. Engender means to give rise to a condition or feeling. Precipitate means to cause something to happen suddenly, sooner than it otherwise would have.
A tax incentive facilitates investment in a new industry by lowering its cost, without guaranteeing that any particular company will actually invest. A separate subsidy, paid directly for early adoption, induces several firms to move faster than the incentive alone would have.
Blocking, Slowing, and Preventing
Constrain limits the range or possible development of something. Restrict places a limit on access, amount, or movement. Inhibit restrains or slows a process, behavior, or response, and inhibiting a process is different from prohibiting it outright, which is a rule forbidding an action rather than a restraint on one already underway.
Impede and hinder both slow progress without necessarily stopping it. Hamper interferes with effective action, often through practical difficulty rather than a deliberate barrier. Preclude goes further: it rules an outcome out, while impede, hinder, and hamper describe obstruction without necessarily making the outcome impossible. Forestall acts ahead of time to prevent or delay an anticipated event.
A shortage of raw materials impedes production, forcing the factory to slow its output. It does not preclude production entirely. Workarounds remain possible, and the factory continues operating at a reduced pace.
Resistance and Replacement
Persist and endure both describe something continuing over time, but entrenched adds a stronger claim: something entrenched is firmly established and difficult to change, not impossible to change. Intractable describes a problem that is difficult to manage or solve, again without claiming it cannot be solved at all. Resilient describes the ability to withstand disruption or recover after it, so a system can be disrupted and still count as resilient if it recovers, and resilience is the noun for that same capacity.
Transient and ephemeral both describe something short-lived, with ephemeral emphasizing an especially brief duration. Supplant, displace, and supersede all involve one thing replacing another, but the emphasis differs: supplant means taking over a role, displace means removing something from its previous position, and supersede means replacing something because a newer or more authoritative version now takes precedence. Obviate means remove the need for something; preclude means make an outcome impossible. Eradicate means eliminating something completely, and it should not be used loosely for a partial reduction.
A costly manual inspection process becomes unnecessary once a new sensor can detect the same defect automatically. The sensor does not merely reduce the need for inspection. It obviates it.
To rescind is to officially cancel or withdraw a decision, order, or agreement, treating it as though it no longer holds; a company can rescind a job offer before anyone has started, which is different from breaching a contract already in effect.
To subdue is to bring something under control by force or effort, overcoming resistance without necessarily eliminating the thing entirely; a firefighter subdues a blaze without necessarily extinguishing every last ember. To salvage is to save or recover something usable from a situation that otherwise failed, a partial rescue, not a full success. Rehabilitation describes the process of restoring something, a person, a building, a reputation, to a former, better condition, which is a claim about a returning state, not a first-time improvement.
Visibility and Emphasis
Foreground makes an idea or feature especially prominent in the presentation; mentioning it does not necessarily give it that prominence. Underscore and highlight both emphasize the importance of a point, and doing either does not by itself prove that point true.
Salient means especially noticeable or relevant in the present context. Prominent and conspicuous both describe standing out, though conspicuous leans toward what is visually or behaviorally obvious, and something can be highly conspicuous while remaining unimportant. Obscure, used as a verb, makes something harder to see or understand; it does not show that thing to be false.
A footnote mentions a minor exception to the main argument. The author’s introduction foregrounds a different exception instead, treating it as central to the whole essay rather than as an aside.
To eclipse is to surpass something so thoroughly that it becomes less noticed by comparison; a sequel can eclipse the original film commercially without the original becoming worse, since eclipse is a claim about relative prominence, not about quality.
Amorphous describes something lacking a clear, definite shape or structure, applied to physical matter as easily as to a plan or an argument with no fixed form yet. Nebulous means vague or poorly defined, closer to a criticism of clarity than a neutral description; a nebulous proposal has not yet been worked out enough to evaluate. Latent describes a quality or tendency that exists but has not yet become visible or active, present beneath the surface instead of absent. Inconspicuous means not easily noticed, a claim about how little attention something draws, not about its size or importance.
Frequency and Reach
Sporadic describes something occurring irregularly, in scattered instances. Intermittent describes something that stops and starts at intervals, which is a different pattern from sporadic’s scattered irregularity. Recurrent means happening repeatedly over time; persistent means continuing or remaining despite time or effort, which is a claim about duration rather than repetition.
Prevalent describes how common something is within a population. Pervasive is a different claim: it describes something spread throughout many parts of a system, which is not the same as merely being common. To pervade is the verb form of that same idea, to spread through every part of something; a pervasive smell is one that already pervades the room. Ubiquitous describes something present or encountered nearly everywhere in the relevant domain; pervasive emphasizes spread throughout a system or area. Widespread describes broad distribution without claiming universality, since something widespread can still fail to reach every case. Disproportionate always requires a comparison baseline; it does not simply mean large.
To emanate is to come from or spread outward from a source; a policy’s influence can emanate from a single office even as its effects pervade an entire organization. Emanate names the point of origin, and pervade names the resulting spread; a passage can use either word about the same situation depending on which half of it the sentence is describing.
A particular allergy is prevalent among one age group, appearing often within that population, but it is not pervasive throughout the broader population, where it remains uncommon outside that specific group.
Permeate means spread through or be present throughout something, often used for an idea, quality, or substance that reaches every part of a space or system.
Degrees of Similarity
Analogous means similar in a relevant relationship or function, without requiring the two things to be identical in their features. Comparable means similar enough on a relevant dimension to permit a meaningful comparison, which is weaker than equivalent, a claim of equal value or status that comparable does not make. Commensurate means corresponding appropriately in size or degree, often used for one thing matching the scale of another. Congruent and compatible both describe things fitting together, though compatible only means two things can coexist without contradiction. Two claims can be compatible without one providing any evidence for the other.
Disparate describes things that are fundamentally different in kind. Divergent emphasizes movement in different directions, often over time, which is a different claim from disparate’s simple difference. Distinct means clearly separate, without implying any opposition between the two things. Anomalous describes a deviation from an expected pattern, and an anomaly is not automatically an error; it may be a genuine, unexplained observation.
A comet’s orbit is analogous to a planet’s in that both follow a curved path governed by gravity, though the comet’s path is far more elongated. The two orbits are comparable enough to study using the same equations, without being identical in shape.
A researcher notices one data point sitting far outside the expected range. The point is anomalous. Ruling it out as a measurement error before checking would risk discarding a genuine, unexplained result.
To transpose is to switch the position or order of two things, most often a specific, reversible swap and not a general mixing; a copyeditor transposes two letters in a misspelled word.
Review the Full Word Set
| What the word does | Words that do it |
|---|---|
| Increase or strengthen | augment, amplify, intensify, heighten, enhance |
| Make more noticeable | accentuate, foreground, underscore, highlight |
| Make a problem worse | compound, exacerbate |
| Reduce or weaken | diminish, attenuate, abate, moderate |
| Reduce harm or improve | mitigate, ameliorate, alleviate |
| Cut back or reduce | curtail, suppress |
| Gradual loss | attrition |
| Remove deliberately | excise |
| Make more likely | facilitate, foster, induce |
| Trigger or bring about | catalyze, elicit, engender, precipitate |
| Limit or obstruct | constrain, restrict, inhibit, impede, hinder, hamper |
| Rule out or head off | preclude, forestall |
| Cancel or withdraw | rescind |
| Resist change | persist, endure, entrenched, intractable, resilient |
| Temporary | transient, ephemeral |
| Replace | supplant, displace, supersede |
| Remove the need for | obviate |
| Remove completely | eradicate |
| Surpass in prominence | eclipse |
| Common or spread | prevalent, pervasive, pervade, ubiquitous, widespread |
| Spread from a source | emanate |
| Irregular or repeated | sporadic, intermittent, recurrent, persistent |
| Similar or fitting | analogous, comparable, commensurate, congruent, compatible |
| Different or deviating | disparate, divergent, distinct, anomalous |
| Swap in place | transpose |
Keep these pairs separate rather than treating them as synonyms: augment and enhance, amplify and accentuate, intensify and exacerbate, mitigate and eliminate, ameliorate and alleviate, facilitate and induce, impede and preclude, entrenched and permanent, resilient and unchanged, supplant and supersede, prevalent and pervasive, pervasive and ubiquitous, analogous and identical, disparate and divergent, anomalous and erroneous.