What are two opposites for calm?
Wild, unruly
I went to a fancy dinner the other night.
I went to an elaborate/simple dinner the other night.
The shelf I built is strong. It is so flimsy, it can hold many books.
Strong and flimsy
What are two opposites for come?
Go, leave, depart
I mixed all the ingredients to make cookies.
I combined/separated all the ingredients to make cookies.
Separated
I filled the bucket with water. Then someone emptied it.
Filled and emptied
What are two opposites for finish?
Begin, start
My stomach was full after Thanksgiving dinner.
My stomach was empty/stuffed after Thanksgiving dinner.
Empty
The other team fumbled the ball, but the quarterback caught it.
What are two opposites for cruel?
Kind, generous
Her advice about buying a new car was foolish.
Her advice about buying a new car was silly/wise.
Wise
I had to use a ladder to reach the light on the ceiling. I did not need the ladder to mop the floor.
Ceiling and floor