ASVAB Vocabulary Word List
Updated July 2026 · AFQT · 6 min read
The best way to build ASVAB vocabulary is to memorize high-frequency words the test reuses year after year, not rare or technical terms. The Word Knowledge (WK) subtest is mostly synonym questions — you pick the answer that “most nearly means” an underlined word — so knowing a word’s plain meaning and one close synonym is usually enough to score the point. Below is a list of 60 common WK words with clear definitions and a synonym for each, plus a method for learning word roots so you can decode words you have never seen.
Why Vocabulary Moves Your AFQT
Word Knowledge is one of the four subtests that build your AFQT enlistment score, and it carries extra weight. WK combines with Paragraph Comprehension to form your Verbal Expression (VE) score, and the AFQT formula doubles VE: AFQT = 2 x VE + AR + MK. Because your verbal score is counted twice, every new word you learn has outsized value. To see exactly how the subtests roll up into your percentile, read how ASVAB scoring works.
The good news: vocabulary is one of the most “studyable” parts of the whole test. Unlike a tricky math problem, a word either stuck in your memory or it didn’t — and flashcards fix that quickly.
60 Common ASVAB Vocabulary Words
These words reflect the everyday academic vocabulary the ASVAB favors. Cover the middle column, read each word, and see if you can supply the meaning and a synonym before you check.
| Word | Definition | Synonym |
|---|---|---|
| Abate | to lessen or reduce | diminish |
| Abhor | to hate deeply | detest |
| Abrupt | sudden and unexpected | hasty |
| Adhere | to stick firmly | cling |
| Adverse | harmful or unfavorable | hostile |
| Ample | more than enough | plentiful |
| Assess | to judge the value of | evaluate |
| Bolster | to support or strengthen | reinforce |
| Brisk | quick and lively | energetic |
| Candid | open and honest | frank |
| Cease | to stop | halt |
| Coarse | rough in texture | harsh |
| Compel | to force | pressure |
| Concise | brief and clear | succinct |
| Deter | to discourage from acting | prevent |
| Diligent | hardworking and careful | industrious |
| Diminish | to make smaller | decrease |
| Docile | easy to manage | obedient |
| Dubious | doubtful | uncertain |
| Elated | very happy | overjoyed |
| Endure | to last or put up with | withstand |
| Feasible | possible to do | achievable |
| Frugal | careful with money | thrifty |
| Futile | pointless | useless |
| Gaunt | thin and bony | haggard |
| Hinder | to slow or block | obstruct |
| Impartial | fair and unbiased | neutral |
| Inept | clumsy or unskilled | incompetent |
| Jovial | cheerful and friendly | merry |
| Keen | sharp or eager | enthusiastic |
| Lenient | not strict | merciful |
| Lucid | clear and easy to follow | coherent |
| Meager | lacking in amount | scanty |
| Meticulous | very careful about details | thorough |
| Novice | a beginner | rookie |
| Obscure | unclear or hidden | vague |
| Obstinate | stubborn | inflexible |
| Placid | calm and peaceful | tranquil |
| Prudent | showing good judgment | sensible |
| Rally | to gather or recover | regroup |
| Rebuke | to scold sharply | reprimand |
| Resilient | able to recover quickly | tough |
| Rigid | stiff or strict | unbending |
| Robust | strong and healthy | sturdy |
| Scrutinize | to examine closely | inspect |
| Serene | calm and untroubled | peaceful |
| Sever | to cut off | separate |
| Sluggish | slow and inactive | lethargic |
| Sparse | thinly spread | scarce |
| Stern | strict and serious | severe |
| Subtle | not obvious | faint |
| Superficial | shallow or on the surface | cursory |
| Tedious | long and boring | tiresome |
| Terse | brief and to the point | curt |
| Thwart | to prevent or block | foil |
| Timid | shy or fearful | meek |
| Vast | very large | immense |
| Vigilant | watchful and alert | attentive |
| Vital | extremely important | essential |
| Wary | cautious | guarded |
Decode New Words With Roots and Prefixes
You will meet words that aren’t on any list, and that is where word parts save you. A root carries the core meaning, a prefix attaches to the front to change it, and a suffix attaches to the end. Learn a few dozen and you can make a smart guess on almost any unfamiliar word.
| Word part | Meaning | Example |
|---|---|---|
| bene- (prefix) | good, well | benefit, benevolent |
| mal- (prefix) | bad, wrong | malfunction, malice |
| anti- (prefix) | against | antidote, antifreeze |
| -port- (root) | carry | transport, portable |
| -spect- (root) | look, see | inspect, spectator |
| -able / -ible (suffix) | capable of | durable, flexible |
| -ous (suffix) | full of | hazardous, joyous |
Example in action: You have never seen malevolent, but you know mal- means “bad.” That single clue lets you rule out positive choices and land on “harmful” or “spiteful” — a point you would otherwise have guessed at blindly.
How to Study This List
- Use spaced repetition. Turn the list into a deck and review it in short daily bursts with our flashcards; words you miss should come back more often.
- Say the synonym out loud. Recalling one close synonym is usually all a WK question needs.
- Read a little every day. News, manuals, and nonfiction expose you to these words in real sentences, which cements meaning better than staring at a list.
- Learn word parts as a fallback. When a word is unfamiliar, break it into prefix, root, and suffix to estimate its meaning.
- Review every miss. After a practice set, add every word you got wrong to your deck.
Once the list feels easy, prove it under time pressure on the Word Knowledge practice test, then dig into question strategy with the full Word Knowledge study guide. Because WK and Paragraph Comprehension both feed your doubled VE score, building vocabulary is one of the highest-return things you can do before test day.
