delusion; trick of the imagination; momentary lapse of reason
Used when one's judgment is temporarily clouded by emotion or confusion, leading to a mistaken belief or poor decision. Often implies a fleeting, irrational state.
See also: 気迷い
Saying that was a momentary lapse of reason.
Her claim of seeing a ghost is probably a trick of the imagination.
Compound of 気 (mind, spirit) + の (possessive particle) + 迷い (confusion, delusion). The exact origin is uncertain, but it follows a common pattern for expressing mental states.