1 definition by BabyFeetInc.

Top Definition
The act of breathing down a person(s) neck, following and non participating an in act, being left out of a group and or discussion.
This dude really won’t stop nigassing us, when are we going to tell him we don't like him?
via giphy
by BabyFeetInc. December 11, 2019

Mug icon
Buy a Nigassing mug!