double-crosser

n. a person who betrays someone. (Often with dirty. See comments at double cross.) You dirty, lowdown double-crosser, you!

Name	Pronounced	Usage
Naiara	-	Basque
Raisa (2)	-	Yiddish
Cesc	SESK	Catalan
Masozi	-	Southern African, Tumbuka
Avtandil	-	Georgian, Literature
Saturn	SA-tərn (English)	Roman Mythology (Anglicized)