/ ˈpɒti; NAmE ˈpɑːti/ adjective , noun
■ adjective ( BrE , informal , becoming old-fashioned )
1.
crazy :
The kids are driving me potty!
2.
potty about sb/sth liking sb/sth a lot
■ noun
( pl. -ies ) ( informal ) a bowl that very young children use when they are too small to use a toilet
—compare chamber pot
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WORD ORIGIN
adjective mid 19th cent.: of unknown origin.