Find the Antonyms of
Profusion :

Aspersion : an attack on the reputation or integrity of someone or something.
Aversion : a strong dislike or disinclination.
Confusion : uncertainty about what is happening, intended, or required.
Scarcity : the state of being scarce or in short supply, shortage.
Profusion : an abundance or large quantity of something.

So, Profusion and Scarcity are antonyms to each other.