unpremeditated act
Definitions
An action performed without prior thought, planning, or deliberation.
A spontaneous or impulsive deed carried out in the moment.
Examples
His decision to jump into the river to save the drowning dog was an entirely unpremeditated act of bravery.
The judge took into account that the crime was an unpremeditated act committed in a moment of extreme emotional distress.
Synonyms
spontaneous action impulsive deed spur of the moment act unplanned occurrence instinctive reaction
Antonyms
premeditated act calculated move deliberate action planned endeavor intentional deed