a bad egg

A dishonest or ill-behaved person. Primarily heard in US. We could tell he was a bad egg even at a young age.

(mainly American informal)

someone who behaves in a bad or dishonest way He's a bad egg - don't believe anything he says.

Name	Pronounced	Usage
Chrystal	['kristəl]
Ruba	-	Arabic
Eutimio	-	Spanish, Italian
Gy&Eth;A	-	Ancient Scandinavian, Icelandic
Frey	[frei]
Quirinus	kwi-RIEN-əs (English), kwi-REEN-əs (English)	Roman Mythology, Late Roman