in over one's head

see under in deep, def. 2.

Name	Pronounced	Usage
Debbi	DEB-ee	English
Eira (1)	-	Welsh
Heidi	HIE-dee (German, English), HAY-dee (Finnish)	German, Swedish, Norwegian, Danish, Finnish, English
Eskarne	-	Basque
Jamshid	-	Persian, Persian Mythology
Hefin	-	Welsh