Most children build vocabulary one word at a time, which is slow and easy to forget. There is a far quicker route. English borrows heavily from Greek and Latin, so hundreds of the words that appear in GL 11-plus papers are built from a small set of repeating parts. Learn that the root spect means "look" and you have a key that unlocks inspect, spectator, spectacle, prospect and respect in one go. This guide gives you the highest-value roots, prefixes and suffixes for the 11-plus, shows how to use them under exam pressure, and links every skill to a free Quest Arena worksheet.
Why roots beat rote learning
In the English and Verbal Reasoning sections, the two vocabulary question types that reward this most are "closest-in-meaning" (choose the synonym) and "opposite-in-meaning" (choose the antonym). A pupil who meets an unfamiliar word such as benevolent can still reason it out: bene means "good" or "well", so a benevolent person is kindly. That single strategy turns guesswork into deduction. Word parts also help in cloze tests, spelling and word-completion tasks, because knowing that -tion is a noun ending or that im- is a negative prefix guides the correct letters.
Word parts come in three positions. A prefix sits at the front and usually changes meaning (un-, dis-, re-). A root or base carries the core idea (port = carry, aqua = water). A suffix sits at the end and often changes the word class (-ful, -ly, -ment). Teach your child to break a long word into these chunks before panicking about its meaning.
The highest-value Latin and Greek roots
Learn these first. They generate the largest families of 11-plus words, so each row is worth far more than a single vocabulary card.
| Root | Meaning | Words it unlocks |
|---|---|---|
| aqua | water | aquarium, aquatic, aqueduct |
| aud | hear | audible, audience, auditorium |
| bene | good, well | benefit, benevolent, beneficial |
| dict | say, speak | dictate, predict, contradict, verdict |
| graph / gram | write, draw | autograph, paragraph, diagram, telegram |
| port | carry | transport, portable, import, export |
| scrib / script | write | describe, scripture, inscription, manuscript |
| spect | look, see | inspect, spectator, prospect, respect |
| struct | build | construct, structure, destruction, instruct |
| vis / vid | see | visible, vision, evidence, video |
| therm | heat | thermometer, thermal, thermostat |
| tele | far, distant | telephone, telescope, television |
A useful drill: give your child one root and set a two-minute timer to list as many real words as they can. This mirrors the fast recall the timed papers demand and builds confidence quickly.
Prefixes that change meaning
Prefixes are the fastest win for antonym questions, because so many of them flip a word to its opposite. Notice that "not" is spelled several different ways depending on the letter that follows, which is also a common spelling trap.
| Prefix | Meaning | Example |
|---|---|---|
| un-, in-, im-, il-, ir- | not | unhappy, invisible, impossible, illegal, irregular |
| dis- | opposite, apart | disagree, disappear, disconnect |
| re- | again, back | rewrite, return, rebuild |
| pre- | before | preview, predict, prehistoric |
| sub- | under, below | submarine, subway, substandard |
| trans- | across | transport, translate, transatlantic |
| anti- | against | antifreeze, antiseptic, antisocial |
| mis- | wrongly | mistake, misunderstand, misspell |
| super- | above, beyond | supermarket, superhuman, supervise |
Spelling tip that examiners love to test: choose the "not" prefix that matches the following letter. It becomes im- before b, m and p (impossible, immature), il- before l (illegal), and ir- before r (irregular). Keeping the double letter in misspell and unnecessary is a frequent select-the-error question, so practise it deliberately.
Suffixes that change how a word is used
Suffixes rarely change the core meaning, but they change the word class, which is exactly what parts-of-speech questions test. Recognising a suffix tells your child instantly whether a word is a noun, verb, adjective or adverb.
| Suffix | Usually makes a... | Example |
|---|---|---|
| - tion, -sion, -ment, -ness, -ity | noun | action, tension, movement, kindness, activity |
| -ful, -less, -ous, -able, -ible | adjective | hopeful, hopeless, famous, comfortable, sensible |
| -ly | adverb | quickly, happily, carefully |
| -ise, -ify, -ate | verb | realise, simplify, activate |
| -er, -or, -ist | person who... | teacher, actor, scientist |
Two suffix rules appear again and again in spelling sections. First, -able vs -ible: -able often follows a complete word (comfort to comfortable, enjoy to enjoyable) while -ible often follows an incomplete root (poss- to possible, terr- to terrible). Second, in British English prefer -ise (realise, organise, recognise) although the papers accept the standard spelling; keep it consistent. For more on these traps see our guide to homophones and confusable spellings.
A worked example under timed conditions
Here is exactly how the strategy pays off. Suppose a closest-in-meaning question asks:
"Choose the word most similar in meaning to AUDIBLE: (a) invisible (b) loud enough to hear (c) unfriendly (d) hidden (e) written down."
Break the word: aud = hear, -ible = able to be. So audible means "able to be heard". The answer is (b). Notice how distractor (e) "written down" would tempt a pupil who confused aud with script — knowing the root removes the trap. Now try an antonym: "Choose the OPPOSITE of BENEVOLENT." Because bene means good, the opposite must mean unkind or cruel; scan the options for "malicious" or "spiteful". Teaching children to name the root out loud before reading the options is a small habit that saves seconds on every vocabulary question and stops careless errors. Build the habit with our vocabulary-building and common 11-plus vocabulary guides.
How this fits the real 11-plus paper
In most grammar regions the exam is set by GL Assessment, whose English and Verbal Reasoning papers are multiple-choice, tightly timed and marked on a separate answer sheet. Vocabulary is tested directly (synonyms, antonyms, odd-one-out, word completion) and indirectly through reading comprehension, where a strong word bank lets a child grasp an unfamiliar passage quickly. In Essex the CSSE paper leans on comprehension and continuous writing, so a wide vocabulary lifts writing marks too. The old separate CEM paper format was discontinued around 2022-2023, and former CEM regions now use GL or bespoke papers — but roots and affixes help under every board because they are simply how English words are built. Remember that all these papers report a Standard Age Score (around 69-141, with 100 the average), which is age-adjusted so younger children in the year group are not penalised.
A four-week learning plan
- Week 1 - roots. Learn six roots from the table above; find three real words for each.
- Week 2 - prefixes. Focus on the negative prefixes and drill antonym questions.
- Week 3 - suffixes. Sort words by class and practise the -able/-ible and -ence/-ance rules.
- Week 4 - mixed timed practice. Combine everything in a timed mock and review every word you missed.
Year 4 pupils should start with the roots table and spoken word-family games; Year 6 pupils should focus on applying roots at speed inside full papers. Keep a personal word journal: every unfamiliar word from reading goes in with its root, meaning and a sentence.
Frequently asked questions
Do I really need to memorise Greek and Latin roots for the 11-plus?
You do not need a formal list to pass, but roots are the single most efficient way to widen vocabulary fast. Because one root unlocks many words, an hour spent on roots teaches more than an hour spent memorising isolated definitions, and it helps with spelling and comprehension too.
Which roots and prefixes are most worth knowing?
Start with the negative prefixes (un-, in-, im-, dis-) because they dominate antonym questions, then the big roots that appear in everyday words: spect, port, dict, aud, vis and graph. These generate the largest word families and turn up most often in practice papers.
How can we practise this for free?
Quest Arena is completely free. Use our worksheets for synonym, antonym and word-completion drills, sharpen technique on the revision hub, then test recall against the clock with an on-site mock. Everything is self-marking so children see instantly which word parts to revisit.