Overzealous describes someone who gets too excited about something, like your mom, the overzealous collector of cute kitten figurines that now fill every table and shelf in the house. If you're overzealous about something, you've gone too far, and you're probably starting to scare people.

What is overzealous behavior?

: too zealous : having or showing too much zeal : excessively eager, enthusiastic, or fervent overzealous parents overzealous workers … another version of the overzealous monitoring that has produced kids who leave for college without ever having crossed the street by themselves.—

What's another word for overzealous?