The word for when something is "not common".
Uncommon
The word for when you are "not pleased" with something.
unhappy
The thing you do to a knot to make it "not tied".
untie
The word for when you "cannot do" something.
unable
The word for when a person is "not known".
unknown
The word for when you are "not sure" about something."
unsure
The word for dishes that are "not clean".
unclean
The word for when something has "not been used" yet.
The word for when a surface is "not even" or "not level."
uneven
The word for feeling "not comfortable" in a situation.
uncomfortable
The word for clothes that are "not folded" and need to be put away.
unfolded
The word for someone who is "not working" and looking for a job.
unemployed
The word for when a structure is "not safe" or "likely to fall".
unstable
The word for when something surprises you because it was "not expected".
unexpected
The word for a bed that has been slept in and is "not made".
unmade
The word for when you are "not paying attention" or "not knowing".
unaware
The word for when a decision is "not fair" or "not justified."
unjust
The word for when someone is "not friendly" or keeps to themselves.
unfriendly
The word for when the refrigerator is empty and "not packed" with food.
The word for a situation that is "not possible" .
impossible or undoable