unplanned action

Definitions

An act performed without prior preparation, forethought, or a predetermined strategy.

A spontaneous or impulsive behavior that occurs without being scheduled or intended.

Examples

The sudden decision to drive to the coast was an unplanned action that turned into a memorable weekend.

His outburst during the meeting was an unplanned action that he later regretted.

Synonyms

spontaneous act impulsive decision spur of the moment unpremeditated move haphazard undertaking

Antonyms

calculated strategy premeditated action deliberate plan intentional maneuver thought out process