He has some loony theories about government conspiracies.
Foolish or irrational.
Don't be so loony and think about the consequences.
It's loony to drive that fast on icy roads and risk an accident.
Frequently Asked Questions
The word "loony" in English means: Someone who is crazy or foolish., A crazy or eccentric person, often in a harmless or amusing way..
The phonetic transcription of "loony" is /ˈluː.ni/ in British English and /ˈluː.ni/ in American English. Click the 🔊 button to hear both pronunciations.
Synonyms for "loony": foolish, insane, eccentric, crazy, mad.
Example usage of "loony": "He's acting like a loony.". More examples on the page.