I forgot to call you back, my bad.
my bad
idiomMy fault; mea culpa.
Origin
Pick-up basketball slang popularized (but not first coined) by Manute Bol, a basketball player of Sudanese origin playing with the Golden State Warriors, and subsequently adopted by teammates. Compare semantics with Russian оплошность (oplošnostʹ, “mistake, bad”), from о- (o-) + плох (plox, “bad”).
I accidentally sent the email to the wrong person, so I told my boss, my bad.
He offered a quick, casual my bad when he realized he had interrupted the speaker during the final presentation.
- 01
bad actor
An individual or entity with a prior criminal conviction, or who has been sanctioned by the court or regulator.
- 02
bad apple
A person who is not wholesome, honest, or trustworthy, especially one who has an adverse influence on others.
- 03
bad books
Disfavor.
- 04
bad business
Synonym of bad news (“irritating, troublesome or harmful thing, situation or person”).
- 05
bad company
The wrong crowd.
- 06
bad egg
Someone whose behaviour is reprehensible or irresponsible; a rogue.
- 07
bad hair day
A day when things seem to be unmanageable or go wrong.
- 08
bad iron
bad luck.
Last updated April 17, 2026