nut·so
ˈnət-(ˌ)sō
chiefly US, informal
1
sometimes offensive
: marked by thought or action that lacks reason : not mentally sound
2
: absurd
a nutso scheme
… guarantees that you make time for each other, no matter how nutso [=hectic, chaotic] your lives become.—Michele Bender
plural nutsos
chiefly US, informal, sometimes offensive
: someone who is not mentally sound
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Merriam-Webster unabridged
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