on the spur of the moment

Without prior planning

On the spur of the moment means impulsively, without planning or forethought: We decided on the spur of the moment to drive to the coast.

The spur is a pointed device used to urge a horse forward—acting on the spur of the moment suggests being prodded into immediate action rather than deliberating.

Related

sudden urge · instinct · serendipity · out of the blue · opportunity · caprice · intuition · leap · unforeseen events · boldness · offhand · snap · passion · thrill · immediacy · surprise · coincidence · curiosity

Opposites
planning and deliberation

on the spur of the momentdeliberately

Done with intention

calculatedly · intentionally · by design · premeditatedly · methodically

temporal preparation

on the spur of the momentaccording to plan

Proceeding as designed

on schedule · by appointment · in advance · ahead of time · prearranged

Family

moment, spurred, spurring, moments, momentary, momentarily, momentous, momentousness

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G