know what are doing

know what you are doing

to have the necessary knowledge or experience to do something Mountain climbing is a dangerous sport, so I hope he knows what he's doing.

Name	Pronounced	Usage
Tinuviel	-	Literature
Christie (2)	-	Scottish, Irish
Leonhard	LE-awn-hahrt	German
Hava	-	Hebrew
Damianos	-	Ancient Greek
Zeus	ZOOS (English)	Greek Mythology