Dissect: SAT Word Roots Game
Dissect is a free SAT word roots game: every card cuts an SAT word into its prefixes, roots, and suffixes so you can see how the meaning is built. Tap the part, build the word, decode the long ones, and catch the impostors.
How to play Dissect
Most SAT words are built from parts: a prefix, a root, a suffix, most of them Latin or Greek and some older English. Dissect shows you the seams. A round is ten cards and a boss word, it takes about two minutes, and every part you get right goes into a Root map you can browse any time. Four kinds of card turn up:
- Spot. A word in pieces. Tap the piece that means what the prompt says: in circumspect, the part that means look.
- Build. A literal meaning such as not + believe + inclined to and a tray of pieces. Tap them in order to build the word. One wrong tap and the card is missed, but you still finish the word and see what it means.
- Decode. A word you may never have seen, shown with its pieces and their meanings. Work out what it must mean from three choices.
- Impostor. Four words. Three share a root; one only looks like it. Tap the fake.
Every round ends with a boss word, a long one like incontrovertible, decoded piece by piece for the most points. Right answers on Spot and Build cards move on by themselves. A miss waits, with the whole word cut open and a one-line explanation, so the lesson arrives exactly when you need it.
Three sample cards
circum · spect
Spot: tap the part that means look.
Spect, from Latin specere, to look. Circum- means around, so a circumspect person looks all around before acting, which is what cautious means.
pel · lucid (through + light)
Decode: transparently clear, lit from one side only, or lasting through the daylight hours?
Transparently clear. Light passes through it. A pellucid explanation lets the meaning shine straight through, and pel- is just per- changed to match the l that follows.
audible · audience · auditory · audacious
Impostor: three come from aud (hear). Which one only looks like it?
Audacious. It comes from audere, to dare, and audacity is daring, not listening. The other three all have an ear in them.
What the game trains
You will never know every word on the SAT. What you can have is a reliable way to make a working guess at the ones you do not know, and roots are that way. A student who sees circum and spect inside circumspect gets a question right on a word they never studied. Dissect trains that move in both directions: breaking a word into parts you recognize, and building a meaning out of parts you are given. It also trains the judgment that goes with it. Some words only look like they share a root, and the SAT is fond of them: enervate weakens rather than energizes, noisome is about smell rather than noise, and disinterested means impartial rather than bored. The Decode and Impostor cards exist so that you learn when to trust the parts and when to check them against the sentence.
How word roots help on the digital SAT
The digital SAT never asks what a root means. Its Words in Context questions, which sit in the Craft and Structure domain of both Reading and Writing modules, give you a passage and four real words, and ask which one “completes the text with the most logical and precise word” or what a word “most nearly means” in that passage. Roots matter at the moment one of those four choices is a word you have never seen. Circumlocution is around + speak; incontrovertible is not + against + turn + able; benediction is well + say. A working meaning from the parts, checked against the passage, turns a guess into an answer. For the full question format with complete explanations, use the Hard Words in Context drills.
Three tips for a higher score
- Find the root first, then the prefix. The root carries the core meaning; the prefix sets its direction. In revoke, voc (call) tells you what happens and re- (back) tells you which way: to call back, to cancel.
- Watch the prefix that changes its spelling. Ad- becomes ac-, as-, at-, ap-; in- becomes im-, il-, ir-; com- becomes con-, col-, cor-. The game shows every form on the reveal, and after a card you can tap any piece to see where it comes from.
- Treat the parts as a hypothesis. Decode the word, then read it back into the sentence. If the sentence agrees, keep it. If it fights you, you may have met an impostor, and the SAT vocabulary flashcards show the same words with their roots and example sentences.
The word parts in the game
Dissect covers 254 word parts: 47 prefixes, 182 roots, and 25 suffixes, each with its meaning, its origin, example words, and a memory hook. Where a prefix means different things in different words, as con- does in concur (together) and conceal (thoroughly), each card teaches the sense it has in that word. The 292 words on the Spot and Build cards come mostly from the same bank of SAT vocabulary as Word Groups and Fit Check, chosen from the vocabulary in College Board’s released digital SAT and PSAT practice tests and question bank, with a few more SAT words added where a useful part had no other example. The Decode and boss words reach beyond that list on purpose, because the skill is handling words you have not studied. Every etymology was reviewed for accuracy, and no SAT question text is reproduced here. Some of the parts you will meet most often:
- ab- away, from
- ad- to, toward
- ante- before
- bene- well, good
- circum- around
- com- together, with
- contra- against
- de- down, away, off
- dis- apart, away
- ex- out, away
- in- not
- inter- between, among
- mal- bad, badly
- ob- against, in the way
- per- through, thoroughly
- pre- before
- re- back, again
- sub- under, below
- super- over, above, beyond
- trans- across, through, beyond
- cap take, seize
- ced go, yield
- cred believe, trust
- cur run
- dict say, speak
- duc lead
- fac make, do
- fer carry, bear
- gen birth, kind, produce
- greg flock, herd
- her stick, cling
- ject throw
- loqu speak
- luc light
- mit send, let go
- path feeling, suffering
- pel drive, push
- plic fold
- pos put, place
- scrib write
- sect cut
- sent feel, think
- sequ follow
- spec look, see
- sta stand
- ten hold
- tend stretch, strive
- vert turn
- vid see
- voc call, voice
- -able able to be
- -acious inclined to, given to (often too much)
- -fy make
- -ity state, quality
- -ive tending to
- -or one who, that which
- -ous full of, having (forms an adjective)
- -tion act, state, result
Keep practicing SAT vocabulary
- Word Groups: sort SAT words into groups by meaning
- Fit Check: prove you can use the words in sentences
- Hard Words in Context drills: the real four-choice SAT format, with explanations
- SAT vocabulary flashcards with word roots
- All SAT Reading and Writing practice and all free SAT and ACT games
Frequently Asked Questions: Dissect
Is Dissect free?
Yes. No sign-up, no app, no paywall. The game runs in your browser on a phone, tablet, or computer.
How does scoring work?
Every card is worth its base points plus a speed bonus while the bar is still draining. Three right answers in a row double your points and six triple them. A miss ends the streak and waits for you to read the explanation, so slowing down to learn never costs anything. Each round ends with a boss word worth the most, and a round with no misses is a clean round.
What is an impostor card?
Four words appear, three of them from the same root and one that only looks like it. Audible, audience, and auditory come from audire, to hear; audacious comes from audere, to dare. The impostor cards are there because word parts are a tool, not a rule, and the SAT likes words whose parts point the wrong way.
Does the game save my progress?
Your Root map, best score, and round count are saved in the browser you play in. Nothing is stored on our servers, and clearing your browser data resets the map.
Do word roots really help on the SAT?
Not as trivia; the test never asks what a root means. They help when an answer choice is a word you have never seen. Its parts give you a working meaning that you can test against the passage, and that is the move the game drills, including the cases where the parts mislead.
Which SAT vocabulary game should I play first?
Word Groups teaches the words by meaning, Fit Check tests whether you can use them in a sentence, and Dissect teaches you to take apart the ones you have never met. Play Dissect whenever unfamiliar words keep turning up in the answer choices.
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