.
antagonist
.
antisocial
.
antiseptic
.
contrast
.
contradiction
.
counterbalance
.
counterproductive
.
obnoxious
.
obstinate
.
obstruct
.
foresight
.
forecast
The hurricane was the _____ to the flood.
antecedent
.
antebellum
A ____ Spongebob should have taken was placing a wet floor sign on the floor after he mopped.
precaution
To ____ evacuating the building, we do a fire drill almost every month.
preempt
