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
Matryona	-	Russian
Collyn	kah-LEEN	English (Rare)
Alvy	['ælvi]
Nanda	-	Hinduism, Indian, Kannada, Tamil
Bartal	-	Hungarian (Rare)
Mentor	-	Greek Mythology