Morphology Matrix - Matrix Over Under

Ready?

Do you want to watch one word being built first?

How to play

Add prefixes and suffixes onto the base word to build as many words as you can.

Finding words

The dashed spaces in the Word Bank show how many words you need to build. Every new word you make pops into one of them. Wider spaces are waiting for longer words made of more parts!

Endings like -s, -ed and -ing

These make a new form of a word you've already found — not a new word. So react, reacts, reacted and reacting all stack up in one place: each form tucks in behind the word, and a little +1, +2, +3… counter shows how tall the stack has grown. Tap any word in your bank to open its card and flip through the forms you've collected.

Complete a stack!

Collect every form of a word and its stack earns a shiny ring — and the biggest stacks set off a celebration too!

Rare words

A few extra-special words are hiding on every board. Build one and it gets a gold star and a celebration all of its own. Rare words aren't part of your goal — they count on top — so a rare find can even take you past it. Hints will never give one away: you have to discover them yourself!

Stuck? Use a hint

Tap Get a hint next to your goal and we'll tell you the meaning of a word you haven't found yet and light up the prefix it needs — you work out the rest! You get three hints a game, and you need to build each hinted word before the next hint unlocks.

When every space is filled

You've done it! You can finish there — or keep going. There are often more words hiding — rare ones too — and every extra word you build pushes your score higher on the leaderboard!

Spelling clues

Sometimes the spelling changes where two parts join. Watch for these:

n Double letters — a letter is added and highlighted in yellow (e.g. run + ing → running).
e Omissions — a silent letter is dropped and shown crossed out (e.g. elevate + ion → elevateion).
yi y → i — a y changes to an i, shown in yellow (e.g. carry + es → carries).
i Vowel connectors — a joining letter highlighted in blue glues the parts together (e.g. therm + o + meter → thermometer).

Which spelling is right?

Word Bank

Don't give up!

Almost there!

Congratulations!

Congratulations!

Congratulations!

Over & Under: build words with over- and under-

Ready?

Word Bank

How to play

Finding words

Endings like -s, -ed and -ing

Complete a stack!

Rare words

Stuck? Use a hint

When every space is filled

Spelling clues

Exit Game?

Don't give up!

Almost there!

Congratulations!

Congratulations!

Congratulations!