Means Not
Time (Again / Before)
Place
Change / Action
Build a Word
100

This prefix means not and makes the word happy

Unhappy

100

This prefix means again in redo.

What is re?

100

This prefix means under in submarine.

What is sub

100

This prefix means wrong in misread.

What is mis

100

Add un to tie.

Untie — not tied.

200

This prefix changes possible

Impossible

200

This prefix means before in preview.

What is pre?

200

This prefix means between in international.

What is inter

200

This prefix means too much in overcook.

What is over?

200

Add re to write.

Rewrite - To write again

300

This prefix means not and begins the word illegal.

What is il?

300

This prefix means ahead of time in forecast.

What is Fore?

300

This prefix means across in transport.

What is trans?

300

This prefix means remove or reverse in defrost.

What is de?

300

Add sub to merge.

Submerge - Go under water

400

This prefix means not and starts the word irregular.

What is Ir?

400

If you replay a game, what are you doing?

Playing it again

400

This prefix means middle in midday.

What is mid?

400

This prefix means with or together in connect.

What is con?

400

Add inter to connect

Interconnect - Connection between things

500

This prefix means against and begins antisocial.

What is anti?

500

If you preheat an oven, when do you heat it?

Before Cooking

500

What does subway literally mean?

A way under the ground.
500

This prefix means out of in export.

What is ex?

500

Add trans to form.

Transform - to change form