nut case
Noun
Meaning
a whimsically eccentric person
Source: WordNetAlternative names
nut-case
Synonyms
nut
crank
fruitcake
screwball
crackpot
loon
freak
maniac
loony
kook
crazy
lunatic
madman
oddball
nutcase
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Antonyms
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Examples
When people say, you know, 'Good teacher,' 'Prophet,' 'Really nice guy'... this is not how Jesus thought of Himself. So you're left with a challenge in that, which is either Jesus was who he said he was or a complete and utter nut case. You have to make a choice on that.