out of (one's) tree

slang Crazy. After yet another sleepless night, I'm starting to feel like I'm out of my tree. He's out of his tree if he thinks this plan is going to work!

Common Names:

Name	Pronounced	Usage
Eleutherios	-	Late Greek
Nsia	-	Western African, Akan
Amalbert	-	Ancient Germanic
Ithel	-	Welsh
Alf (1)	-	Swedish, Norwegian, Danish, Norse Mythology
Jamshed	-	Persian, Tajik, Persian Mythology