noun
stupidity; absurdity; presumption; impertinence
Archaic or highly literary term for foolishness, absurdity, or presumptuous behavior. Rarely used in modern conversation; mostly encountered in historical or dramatic contexts.
そのような烏滸の沙汰は許されない。
Such foolishness is unforgivable.
The kanji 烏滸 are ateji for おこ (foolish), and 沙汰 means 'affair' or 'matter'. The exact origin is uncertain, but it is an old compound meaning 'foolish matter'.