be out of (one's) tree

slang To be 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
Katinka	kah-TING-kah (German)	German, Dutch
Evdokija	-	Macedonian
Costache	kos-TAH-ke	Romanian
Astaroth	-	Literature
Veli	VE-lee	Finnish
Shera	['ʃerə]