What can you make?

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Add or update a verified word and its meanings. Saved entries become available to everyone playing this game.

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Both prefix families used here come from Latin. They look alike, but their meanings differ:

• Not — negative prefix: inactive means not active; impossible means not possible.
• In, into, or within — location/direction prefix: import means to bring goods into a country; inject means to put a substance into something.

Choose the meaning that fits the word. A changed spelling does not change which prefix family you selected. For example, the im- in impossible means “not,” while the im- in import means “into.” Some modern word meanings are less literal than their historical parts.

Choose the in- (not) tile. It usually becomes im- before b, m, or p, il- before l, and ir- before r. Otherwise it stays in-. This rule applies to words that use this negative prefix; it does not mean every base accepts it.

Try possible → impossible, legal → illegal, regular → irregular, or act + -ive → inactive. The doubled letters come from the prefix plus the base: il + legal, ir + regular. The separate in-/im- cards meaning “in/into” share their own spelling rule and remain distinct from in- meaning “not.”

A saved word’s accepted spelling can handle exceptions or other spelling changes.

Either in- or im- can be used to build these words. The tray shows im- before b, m, or p, and in- elsewhere in this starter rule. Try im- + struct + -ion → instruction, or in- + port → import. Both cards check the same saved recipe, so you do not need duplicate word entries.

This family means “in/into,” and is separate from in- meaning “not.” A spelling suggestion does not guarantee that a combination is a real word. Other historical forms and exceptions can be handled through a verified word’s accepted spelling.

Build sub- + spect to make suspect. The prefix takes the form su- in this word, so the b is dropped: su + spect → suspect. The root spect means “look.” Historically, the pieces meant looking up from below; the modern meanings involve suspicion or doubt.

This is a historical spelling change, not a rule for every sub- word. Words such as subsoil keep the b. The game applies this change to verified entries, and shows their accepted spelling.

To add another verified example, select sub-, enter its root and suffix, and save the accepted spelling. When a root starts with s and the saved spelling is su + root + suffix, the tray will show su- and explain the dropped b.

The current bank checks words. An unlisted combination may still be a real word; it simply isn't verified here. Teachers can verify and save it above. Piece meanings are clues, not complete dictionary definitions.

Each new word: 1 point for the root, +2 per prefix and suffix, +2 for 7 or more letters. Repeat words earn no extra points. Points and discoveries save in this browser until you reset saved progress or clear browser data.