Is Deviative a Word?

Deviative | Definition of Deviative by Merriam-Webster.

What is Deviative?

adjective. tending to deviate or cause to deviate.

What do we call a person who overacts?

Definition of 'overact'

If you say that someone overacts, you mean they exaggerate their emotions and movements, usually when acting in a play. Sometimes he had overacted in his role as Prince. [ VERB] Synonyms: exaggerate, overdo it, go overboard [informal], overplay More Synonyms of overact.