出で来き心ごころ

noun

sudden impulse; passing fancy

Refers to a momentary, often regrettable, impulse or whim that leads to an action, especially a misdeed. Commonly used in contexts of explaining or excusing an uncharacteristic act.

• 万まん引びきは出で来き心ごころでやってしまったと彼かれは言いった。