wouldn't hurt a fly
idiomPart ofhurt
wouldn't hurt a fly — idiom
1. used to say that someone is very gentle by nature and would never cause harm to
1.idiom
Definition
used to say that someone is very gentle by nature and would never cause harm to anyone or anything.
Example
Don't be afraid of the big dog — he wouldn't hurt a fly.
Nia talks tough, but she wouldn't hurt a fly really.