Spelling decides, not sound: compound words in the 11+
The Short Answer
A compound word question gives your child two sets of three words and asks which one from the first joins to one from the second to make a real word. There are nine possible pairs and exactly one works. Write every pair out in order rather than listening for it, because spelling decides the answer and the compound often sounds nothing like its two halves.
What is a compound word question?
Your child is given two sets of three words and asked to join one word from the first set to one from the second to make a new word. Two sets of three make nine possible pairs, and exactly one of them works.
The words keep their spelling. Nothing is added at the join, nothing is doubled, nothing is dropped. If your child has to change a letter to make a word appear, they are answering a different question.
What makes the type harder than it looks is that the answer does not have to sound like its parts. FOOT and BALL make FOOTBALL, and that feels right. MASS and AGE make MASSAGE, and that feels wrong — but it is the answer, because the letters spell a real word. The whole lesson is in one line: spelling decides, not sound.
How do you teach the method?
Take the first word in the left-hand set and try it against all three on the right. Then the second word against all three. Then the third. Always in that order, so nothing is missed.
Write each pair out in full. Not in your head — on the paper. A doubled letter or a missing C is invisible to the ear and obvious on the page.
Judge it by the spelling, not by whether it sounds like a word you know. If the letters spell something real, it is the answer, however odd the two halves look together.
Can you show me a worked example?
What about the version with three words and one gap?
The other form of this question gives three words — CASE, MAKER, MARK — and asks for one word that goes in front of all three. Here it is BOOK: BOOKCASE, BOOKMAKER, BOOKMARK.
The trap is stopping early. SUIT works beautifully with CASE, and a child who has found SUITCASE feels finished. But SUITMAKER is not a word and neither is SUITMARK, so SUIT is wrong. The rule is simple to say and easy to forget under time pressure: all three, or it is the wrong word.
A handful of linking words come up often enough to be worth knowing by sight — BOOK, HOUSE, BALL, LIGHT, SIDE, OUT, OVER and SOME. Recognising one of those early narrows the search considerably.
Where do pupils lose marks?
Three places, and all three are avoidable.
First, choosing by ear. A child who says the pairs under their breath will accept SLEEPPER and reject MASSAGE, which is precisely backwards. The ear is the wrong instrument for this question.
Second, stopping at the first pair that looks right without finishing the other eight. Occasionally a pair looks like a word and is not, and the real answer is sitting in the pairs never tried.
Third, on the three-word version, settling for a linking word that works twice. Two out of three is not a partial mark; it is a wrong answer.
Try it yourself
In each question, join one word from the first set to one word from the second set to make a new word. Write out all nine pairs before you choose.
- (POST, KEY, COW) and (BOW, BOX, FLY)
- (ARM, MASS, BED) and (END, BAG, SIDE)
- (BOOK, SLEEP, MOON) and (BRUSH, SIDE, LIGHT)
- (SEA, STAR, WATER) and (END, CAKE, FISH)
- (RAIN, PAN, MASS) and (HER, PER, CAKE)
- POSTBOX. The other eight pairs — POSTBOW, POSTFLY, KEYBOW, KEYBOX, KEYFLY, COWBOW, COWBOX, COWFLY — are not words, however plausible one or two look written down.
- BEDSIDE. ARMBAG and BEDBAG feel like they ought to be words and are not. That feeling is exactly what the question is testing.
- MOONLIGHT. BOOKLIGHT is a thing you can buy and is still not a word in the dictionary, which is worth knowing before it costs a mark.
- STARFISH. SEAFISH sounds reasonable and is not a word; WATERFISH neither.
- PANCAKE. Notice that PAN and CAKE do describe a pancake, but MASS and AGE tell you nothing about a massage. Both are still correct answers to their questions.
How much practice does this type need at home?
Ten minutes twice a week for a fortnight is usually plenty. This is a type where the method is short and the gains come quickly, so it rewards early practice and then needs very little maintenance.
After that, the useful practice is not more compound words in isolation but mixed practice, where your child has to recognise which type of question they are looking at before choosing a method. Compound words, insert a letter and move a letter look similar on the page and follow different rules, and telling them apart at a glance is the skill that actually earns marks in the test.
Free: a Verbal Reasoning workbook
Questions across the Verbal Reasoning question types, with the method printed at the top and full answers at the back. One workbook for the whole strand, not a sheet per question type.
Frequently Asked Questions
Does the compound have to mean something related to its two words?
No, and this is the single most useful thing to tell your child. FOOT and BALL make FOOTBALL, which is about feet and balls. MASS and AGE make MASSAGE, which is about neither. The question asks only whether the letters, in that order, spell a real word. Meaning is not part of the test.
Can my child change the spelling to make a pair work?
No. Both words keep every letter exactly as given, and nothing is added or removed at the join. If your child finds themselves dropping a letter to make a word appear, they have answered a different question — insert a letter and move a letter both allow changes, and compound words does not.
Why write out all nine pairs when the answer is often obvious?
Because it is often obvious and wrong. The paper is written so that two or three of the nine sound almost right, and a doubled letter or a missing C is invisible to the ear. Writing them down takes a few seconds and turns a guess into a check. Once your child is quick, they can write the pairs in shorthand, but we would not skip the step.
What is the version with three words and one gap?
Some questions give three words such as CASE, MAKER and MARK and ask for one word that goes in front of all three — here, BOOK. The rule that matters is that the linking word must work with all three, not two. SUIT works with CASE and looks promising against MARK, and a child who stops after two loses the mark. Common linking words are worth knowing: BOOK, HOUSE, BALL, LIGHT, SIDE, OUT, OVER and SOME.
What year should my child meet this type?
Year 4 is a good time. Compound words need no advanced vocabulary — the words involved are ordinary — so the difficulty is entirely in the method and the discipline of checking. That makes it one of the more satisfying types to teach early, because progress comes quickly and visibly.
Sources
- GL Assessment — 11+ familiarisation materials and question type descriptions Published 2025.
- Clever Clogs Academy — our own Year 4 and Year 5 lesson records, Winslow Published September 2025 to July 2026.
We are not affiliated with, endorsed by or connected to GL Assessment or Buckinghamshire Council. Test arrangements change; always check the council's own pages for the current year's dates.
We Teach This Method Every Week in Winslow
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