go underground

in. to go into hiding; to begin to operate in secret. The entire operation went underground, and we heard no more about it.

Name	Pronounced	Usage
Giovanna	jo-VAHN-nah	Italian
Zaida	-	Arabic
Esmeralda	[.ezmə'rældə]
Nila	-	Tamil, Indian, Hindi
Yachin	-	Hebrew, Biblical Hebrew
GrÓA	-	Norse Mythology, Icelandic