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to bust ass

to bust ass

44 9.1
To work very hard to finish something
  • phrasal verb
  • NSFW
: trabajar duro
  • If we want to finish this project on time, everyone will need to bust ass and give their best effort.

Examples

  • I know you've been busting ass with work and getting everything ready for the baby.

  • The impression I get is that when you bust ass and believe in what you're doing, you can build a steady fanbase and respect.

    Blog text (6)
  • Every single member of Congress with a shiny, marble-floored office on the Hill has a local congressional office where people are busting ass working for the constituency every day.

    Blog text (20)
  • To succeed in this competitive industry, you really have to bust ass to deliver quality work.

  • After the promotion was announced, she decided to bust ass and prove that she deserved it.

Synonyms

to bust butt
vsto bust ass
  • Informal
14 9.4

To work very hard to finish a task

is the same intense effort but uses a different crude variant
to work to the bone
vsto bust ass
  • Informal
11 6.0

To do very hard, long tasks until you are very tired

is like hard effort but does not emphasize resulting exhaustion
to work like crazy
vsto bust ass
  • Informal
3 4.8

Try very hard for some time

is similar but implies general hard effort rather than frantic strain
to work one's ass off
vsto bust ass
  • Offensive
1 8.4

Try very hard for a long time to do something

is the same idea also expressed in coarse language
to put one's shoulder into
vsto bust ass
  • Informal
6.8

To work very hard and use a lot of energy

is similar but stresses general hard work rather than focused force
to break one's back
vsto bust ass
  • Informal
6.0

To work very hard at something until you are very tired

is similar but frames effort without stressing bodily harm

Antonyms

to take it easy
  • Informal
431 2.5

Relax and avoid doing too much or worrying

to slack off
  • Informal
20 3.9

To become less strong or busy

How Hard

to work one's ass off
  • Offensive
1 8.4
to slave
38 5.3
to bust ass
  • NSFW
44 9.1
work
∞ 1.0
to loaf
8 6.2

Surface Forms

bust ass infinitive
busted ass past
busted ass past participle
busting ass present participle
busts ass third person singular

Morphology

bustin + ass

The parts 'bust' (to break/force) and 'ass' (butt) combine in a figurative way to mean 'exert oneself', so there is a partial, metaphorical link to working hard rather than a straightforward compositional meaning. Because the sense is idiomatic, informal/vulgar, and requires recognizing a metaphorical extension of 'bust', a B1 learner who only knows the literal words would only partly infer the intended meaning and not reliably predict it.

Etymology

The verb bust ass may come from a strong image: bust meaning 'break' and ass meaning 'butt', so someone works or moves so hard they could hurt their behind. That's why today it means 'work very hard'.