like a thief in the night

In a swift and secretive, stealthy, or surreptitious manner. The cancer spread through my lungs and into my bones like a thief in the night, giving me no chance of beating it.

Common Names:

Name	Pronounced	Usage
Svein	-	Norwegian
Mykhailo	-	Ukrainian
Alcides	-	Greek Mythology (Latinized), Portuguese, Spanish
Carol (2)	-	Romanian
Weronika	ve-raw-NEE-kah (Polish)	Polish, Sorbian
TevfİK	-	Turkish