troppo

Crazy, mad, strangely behaving; especially as attributed to hot weather.

Adjective

  1. Crazy, mad, strangely behaving; especially as attributed to hot weather.
    • Barry′s gone troppo and married that sheila he′s only known for two weeks.
    • After three months by himself on his ‘dream’ tropical island he went troppo and smashed all the equipment.
    • ‘[…]She calls these rehearsals my singing lessons - but at least I don′t have people rushing in thinking I′ve gone troppo . . .’ ‘Except me.’ Violet′s smile lingered as she gazed at him. - 1989, Rosie Boycott, All for...

Origin

From tropical + -o (diminutive suffix). First used by Australian troops in tropical regions during WWII, in the sense “affected by war service in the tropics.”

Synonyms

bonkers doolally doolally tap