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SAT vocabulary: what the test actually asks, and 50 words worth knowing.

The SAT stopped testing obscure words on their own in 2016. Today’s Reading and Writing section asks “words in context”: a short passage with a blank or an underlined word, and four choices that all look plausible until you know the shade of each. So the vocabulary that scores is not the longest list; it is a few hundred mid-level words you know well enough to tell apart. Here are 50 at exactly that level, with plain meanings, and a way to study them that the memory research supports.

By the Gloss team, PixelPaw · Published October 24, 2026 · How we check what we write

What the test actually asks

A typical question gives you a few sentences from an essay or a piece of fiction with a word missing, and asks which choice most logically and precisely completes the text. The choices are words like ambivalent, indifferent, skeptical, resigned: all real, all of a similar register, only one of them right for the sentence. A second kind underlines a word and asks what it most nearly means there. Neither rewards knowing that pulchritude means beauty. Both reward knowing that ambivalent is feeling two ways and indifferent is feeling nothing, which is a difference you learn from sentences, not lists. (That is also why pairs that get confused are the best thing to study.)

50 words at the right level

These are the words the passages use: the register of a good newspaper essay, not of a spelling bee. Each one links to its page, with how to say it, three sentences, its synonyms and how they differ.

• ambivalentadjective Having mixed feelings about something, pulled both ways.
• anachronismnoun Something that belongs to a different time than the one it is in.
• apathynoun Not caring about something, with no interest or feeling.
• benevolentadjective Kind and wanting good things for others.
• cacophonynoun A harsh mix of noises that do not go together.
• candornoun Honest, open speech, even when it is uncomfortable.
• capriciousadjective Changing suddenly and for no clear reason.
• circumspectadjective Careful about what you do or say, thinking of the risks.
• clandestineadjective Kept secret, usually because it is not allowed.
• conundrumnoun A confusing problem with no easy answer.
• didacticadjective Meant to teach a lesson, often in a preachy way.
• disparateadjective Very different from each other, with little in common.
• ebullientadjective Bubbling over with energy and cheer.
• eloquentadjective Speaking or writing clearly and beautifully, so that people are moved.
• enigmanoun A person or thing that is hard to understand or explain.
• ephemeraladjective Lasting a very short time.
• equanimitynoun Staying calm and even whatever happens.
• esotericadjective Understood by only a small circle of people with special knowledge.
• euphorianoun A feeling of intense happiness and excitement.
• evanescentadjective Fading quickly, gone almost as soon as it appears.
• fastidiousadjective Very particular about details and cleanliness.
• gregariousadjective Fond of company; happiest in a group.
• insidiousadjective Spreading harm slowly and quietly, so you do not notice.
• juxtapositionnoun Putting two things side by side so you see how they differ.
• laconicadjective Using very few words, so that what is said carries weight.
• lethargicadjective Sluggish and tired, with no energy to do anything.
• lucidadjective Clear and easy to understand; also, thinking clearly.
• magnanimousadjective Generous and forgiving, especially toward a rival.
• mercurialadjective Changing mood quickly and unpredictably.
• nebulousadjective Vague and unclear, with no firm shape.
• nonchalantadjective Calm and unbothered, as if nothing matters much.
• obfuscateverb To make something harder to understand, usually on purpose.
• ostentatiousadjective Showy in a way meant to impress people.
• paradigmnoun A model or pattern that shows how something is done or understood.
• paradoxnoun A statement that seems to contradict itself but may be true.
• perniciousadjective Doing harm slowly and quietly, so you notice it late.
• placidadjective Calm and peaceful, not easily upset.
• pragmaticadjective Dealing with things in a practical way, based on what works.
• precociousadjective Developing skills or maturity earlier than usual.
• prolificadjective Producing a great deal of work, fruit, or offspring.
• quintessentialadjective The most perfect example of a type.
• reticentadjective Holding back from saying what you think or feel.
• sagaciousadjective Wise and sharp in judgment.
• sanguineadjective Cheerfully hopeful, even when things look bad.
• surreptitiousadjective Done secretly, so no one notices.
• taciturnadjective Saying very little, by habit.
• tenaciousadjective Holding on tight and not giving up.
• trepidationnoun A nervous fear about something that is about to happen.
• ubiquitousadjective Found everywhere, all the time.
• vicariousadjective Felt through someone else’s experience rather than your own.

How to study them (the way memory works)

1. Start eight weeks out. In a review of 317 experiments, study spread over time beat the same hours in one sitting, and the best gap between reviews grew with how long the memory had to last (Cepeda et al., Psychological Bulletin, 2006). Ten words a week for five weeks, then three weeks of review, beats fifty words the weekend before.
2. Recall, don’t reread. Cover the meaning and say it. Students who were tested on material remembered substantially more a week later than students who reread it (Roediger and Karpicke, Psychological Science, 2006).
3. Learn the difference, not the definition. For every word, know the two it is confused with. Reticent is unwilling to speak; taciturn is habitually silent; laconic uses few words on purpose. The test lives in those gaps.
4. Meet each word in sentences. Ten encounters in context produced sizeable gains in a 2007 study, and the author thought full knowledge might take more (Webb, Applied Linguistics, 2007). Read the passages in practice tests for the words, not just the answers.
5. Write one sentence a day using the week’s words. Your own sentence is the encounter that counts most.

The 2027 dates

Spring: March 6, May 1 and June 5, 2027, with registration deadlines of February 19, April 16 and May 21. The 2027–28 year is expected to open on August 28, 2027, with dates in September, October, November and December. Count back eight weeks from the one you choose; that is the day to start.

Where Gloss fits

Gloss, which we make, explains each of these words in the style you read (the ADHD style puts the point first; Like I’m 5 uses no long words), shows the synonyms with the difference between them, and brings the words back with four short games on a spaced schedule, which is steps one, two and four above done for you. It is not an SAT app and does not pretend to be; for full practice tests, use the College Board’s free Bluebook app and Khan Academy. For the words, this page and a notebook will do, and Gloss will do it with less friction.

Keep reading

Why you forget a word right after you look it up · How to remember new words · The best vocabulary apps for adults in 2026 · All guides