Prefix: un-

• un- means not or opposite of

• Example: unhappy - not happy

• Example: unavailable - not available

• What other examples can you think of?

Prefix: re-

• re- means back or again

• Example: restart - to start again

• Example: redo - to do again

Prefix de-

• de- means opposite

• example: decode - figure out the code

• example: decompose - to break down

Root: form

• form means shape

• Example: uniform - one shape

• Example: transform - change shape