a bad apple

A person who negatively impacts an entire group of people through his or her words or actions. Taken from the proverb "a bad apple spoils the bunch." Jeremy is really a bad apple. After five minutes with my usually well-behaved kids, they're all acting out.

a bad/rotten apple

one bad person in a group of people who are good You'll find the occasional rotten apple in every organization.

Common Names:

Name	Pronounced	Usage
Adonis	ə-DAH-nəs (English), ə-DO-nəs (English)	Greek Mythology
Jill	JIL	English
Tatienne	-	French
Terrie	TER-ee	English
Miu	mee-oo	Japanese
Nichol	-	Scottish, Medieval English