11+ Vocabulary: How to Build It (and Word Lists That Work)
· 9 min read
Vocabulary is the hidden lever behind 11+ verbal reasoning and comprehension. How to build it deliberately — word journals, wide reading and morphology.
Why vocabulary quietly decides 11+ outcomes
Vocabulary is the single most under-rated factor in 11+ performance, because its influence is spread across the whole paper rather than confined to one section. Synonym and antonym questions test it directly. Cloze and comprehension questions depend on understanding words in context. Verbal reasoning leans on it constantly, and even maths word problems can trip up a child who does not know a key term. The 11+ deliberately tests vocabulary well above typical Year 5 level — words a bright child may simply never have met — which is why a strong reader with a narrow vocabulary can still underperform. The encouraging part is that vocabulary is highly trainable with the right habits, and the gains compound: a word genuinely learned this month keeps paying off in every paper afterwards. For how this feeds the reasoning paper specifically, see our verbal reasoning tips and worked examples.
Do 11+ word lists actually work?
Word lists are useful as a map and useless as a method. As a map, a good list tells you roughly the range and register of vocabulary the 11+ expects, and lets you spot obvious gaps. As a method — sitting a child down to memorise a hundred words and their definitions — they largely fail, because rote-learned definitions evaporate within weeks and rarely transfer to a question phrased differently from the flashcard. The evidence and the experience of most 11+ families point the same way: depth beats breadth. A child who genuinely understands two hundred words — can use each in a sentence, knows a synonym and an antonym, recognises it in an unfamiliar context — will out-score a child who has shallowly crammed a thousand. So by all means use a list to identify what to work on, but convert each word into something the child has actually used, not just seen. The next two sections cover how.
The word journal method
The most effective single vocabulary technique is also one of the simplest: a word journal. When your child meets an unfamiliar word — in reading, conversation, or practice — they write it down with four things: a definition in their own words (not copied from a dictionary), an example sentence they have written themselves, and a related word, either a synonym or an antonym. Reviewing the journal once a week, briefly, cements the words far better than any amount of passive exposure. Keep the pace humane: five to ten new words a week, genuinely learned, is far more valuable than long daily lists that overwhelm. The act of paraphrasing a definition and inventing a sentence forces the kind of deep processing that makes a word stick, and the weekly review catches the ones that are slipping before they vanish. A word that has been written, used in a sentence, and reviewed twice tends to stay; a word merely highlighted in a book is usually gone by the weekend.
Reading is the engine
No deliberate vocabulary programme can match the sheer volume of words a child meets through wide, regular reading — and crucially, reading delivers those words in context, which is exactly how the 11+ tests them. Twenty to thirty minutes a day across genres does more for vocabulary than any worksheet: fiction supplies descriptive and emotional language, good non-fiction supplies precise and subject-specific terms, and quality journalism or older literary prose supplies the formal register the exam favours. Our 11+ reading list suggests titles that stretch vocabulary while staying genuinely enjoyable, and pairs naturally with comprehension work — see our comprehension techniques. The way to turn reading into vocabulary growth is light-touch active noticing: when a new word appears, pause, ask your child to guess its meaning from context, then add it to the word journal. Done a few times a week, this converts ordinary reading into a steady vocabulary engine without making it feel like revision.
Which kinds of words does the 11+ reward?
Certain categories of vocabulary repay focused attention because they appear disproportionately in 11+ papers. Formal and literary register: words like 'reluctant', 'feeble', 'conceal' and 'vast' that a child might recognise but not actively use. Word roots, prefixes and suffixes: understanding that 'aud' relates to hearing, that 'mal' signals something bad, or that '-ous' makes an adjective lets a child decode unfamiliar words on sight — morphology is one of the highest-leverage things to teach. Words with multiple meanings: 'fair', 'left', 'crane' and 'present' all trip up children who know only one sense. Homophones: 'their/there/they're', 'past/passed', 'principal/principle' — frequently tested and easily confused. Precise connectives and academic words: 'however', 'therefore', 'consequently' — these also lift writing quality. Teaching the patterns, rather than just individual words, multiplies the return: a child who understands roots and affixes can reason out hundreds of words they have never formally learned.
How to use a word list without rote cramming
If you do use a published 11+ word list, treat it as a diagnostic checklist rather than a memorisation task. Go through it with your child and sort words into three piles: knows confidently, half-knows, and doesn't know. Ignore the first pile. Feed the second and third piles into the word journal a handful at a time, learning each properly through definition, sentence and a synonym or antonym, and revisit them on a spaced schedule — a day later, a few days later, a week later. Use light games to make review painless: quick-fire synonym matches, 'use this word in a sentence about today', odd-one-out by meaning. Quiz in both directions — word to meaning and meaning to word — because the 11+ asks both. The goal is never to 'finish the list'; it is to keep a small, steadily growing stock of words the child genuinely owns. Slow and deep beats fast and shallow every time.
Letting practice surface the right words
Doing this by hand — choosing words at the right level, tracking which ones are sticking, deciding what to revisit — is real work for a parent. GrammarPrep's adaptive English and verbal-reasoning practice surfaces vocabulary at the level that is productive for your child rather than too easy or too hard, and tracks performance over time so the words that need another pass come back around. The free 15-minute diagnostic at grammarprep.uk/onboarding shows where vocabulary and verbal reasoning currently sit in your child's overall picture across the four subjects — no account required. Pair the platform's targeted practice with the two habits that no app replaces, daily wide reading and a weekly word journal, and vocabulary stops being the hidden weakness that quietly costs marks and becomes a steady, compounding strength. For more free ways to build it, see our free 11+ resources guide.