1. slightly mentally unbalanced or eccentric
Usage: informal; dialectal

Examples

• The old man seemed a bit teched, talking to his cats like they were people.
• She’s not crazy, just a little teched in the head.
• People thought he was teched because he collected bottle caps.
• My grandmother always said Uncle Joe was teched but harmless.
• The townspeople whispered that the hermit was teched.