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
Sabia	-	Irish Mythology
Eun	uwn	Korean
Amir (1)	-	Arabic, Persian, Urdu, Malay, Indonesian
Leah	LEE-ə (English)	English, Hebrew, Biblical, Biblical Hebrew
Isadora	[.izə'dɔ:rə]
Godric	GAHD-rik (English)	Anglo-Saxon