bust one's ass

Work extremely hard

To bust one's ass is to work extremely hard or exert oneself strenuously: I've been busting my ass all week to finish this project.

The phrase emphasizes intense physical or mental effort, often with a note of complaint or pride.

A variant, bust one's butt, softens the vulgarity slightly.

Can also mean to fall hard: I busted my ass on the ice.

Related

work like a dog · work one's fingers to the bone · put in the work · buckle down · leave no stone unturned · push through · concentrate · resolve · grit · burn the midnight oil · pull an all-nighter · toil · go the extra mile · tenacity · dig · fortitude · diligence · resilience

Opposites
effort and work intensity

bust one's assslack off

Reduce one's effort

take it easy · phone it in · coast · loaf · goof off

productivity and engagement

bust one's assslack off

Reduce one's effort

goldbricking · sit on one's hands · twiddle one's thumbs · waste time · procrastinate

work ethic/attitude

bust one's assloaf

Baked bread shape

goof off · shirk · goldbrick · sandbag · malinger

Family

bust, busts, busted, busting, buster, busters

Familiarity
Top 100,000
Profile
Timeless · Everyday, not technical · Rated PG-13