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
Bridget	BRIJ-ət (English)	Irish, English, Irish Mythology
Aristaios	-	Greek Mythology
Kingsley	KINGZ-lee	English (Modern)
Frank (2)	FRANGK	English
Gee	['dʒi:]
Boro	-	Croatian, Serbian