meshugaas

[ mish-uh-gahs ]
/ ˌmɪʃ əˈgɑs /

noun Slang.

foolishness; insanity; senselessness.
Also mishegaas.

Origin of meshugaas

1905–10; < Yiddish meshugas < Hebrew məshuggāʿ
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019