bad egg
Someone whose behaviour is reprehensible or irresponsible; a rogue.
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
“Don't trust him, he is a bad egg.”
“She realizes now that her old boyfriend was a bad egg.”
“The manager fired the new employee after realizing he was a bad egg who caused trouble for the whole team.”
“My parents warned me that hanging out with a bad egg like him would eventually lead to serious trouble with the local police.”
“The teacher noticed that one bad egg in the back of the classroom was encouraging the other students to skip their homework and ignore the rules.”
“Despite his charming outward appearance, the townspeople eventually discovered he was a bad egg who had been stealing from their savings for years.”
An allusion to an egg that has become rotten, first appearing in the mid-19th century as a metaphor for a person whose character is found to be similarly spoiled. The comparison rests upon the fact that the exterior of an egg remains deceptively clean while the interior has grown sulfurous and quite unusable. It is a social observation of the most practical sort: one does not typically discover the nature of the specimen until the shell has been cracked.
- 01
a wild goose never laid a tame egg
Most things are inherited and predetermined.
- 02
bad actor
An individual or entity with a prior criminal conviction, or who has been sanctioned by the court or regulator.
- 03
bad apple
A person who is not wholesome, honest, or trustworthy, especially one who has an adverse influence on others.
- 04
bad books
Disfavor.
- 05
bad business
Synonym of bad news (“irritating, troublesome or harmful thing, situation or person”).
- 06
bad company
The wrong crowd.
- 07
bad hair day
A day when things seem to be unmanageable or go wrong.
- 08
bad iron
bad luck.
Last updated August 10, 2026