Where does “meshugas” come from?

meshugas (Yiddish) comes from Yiddish meshuge, from Hebrew מְשׁוּגָּע, from Hebrew שׁוּגַּע — be driven mad.

Ancestry of “meshugas”, step by step

Step	Language	Word	Meaning
1	Yiddish	meshuge	—
2	Hebrew	מְשׁוּגָּע	crazy
3	Hebrew	שׁוּגַּע	be driven mad

meshugas — Etymology, Origin & Word History | Etymology Explorer