Prefix Un-

Not sure

• Uncertain

• Uncommon

• Unconscious

• Undecided

Rare; Not the usual; Remarkable

• Uncommon

• Unconscious

• Undecided

• Unexpected

Not within thought; Not awake

• Unconscious

• Undecided

• Unexpected

• Unmistakable

Not yet at the point of making a decision

• Undecided

• Unexpexted

• Unmistakable

• Unnecessary

Not deriving; not having any value

• Unworthy

• Uncertain

• Uncommon

• Unconscious

Not what someone thought would happen; not predicted

• Unexpected

• Unmistakable

• Unnecessary

• untidy

Messy; not neat; not organized

• Untidy

• Unwise

• Unworthy

• Uncertain

Not required

• Unnecessary

• Untidy

• Unwise

• Unworthy

Not smart

• Unwise

• Unworthy

• Uncertain

• Uncommon

Clear; cannot be understood the wrong way; not able to be confused or misunderstood

• Unmistakable

• Unnecessary

• Untidy

• Uniwise