On the spur of the moment
Meaning
To do something suddenly and impulsively, without prior planning or thought.
Origin
The phrase gallops straight out of the equestrian world. A "spur" is a small, sharp device worn on a rider's boot, used to urge a horse forward with sudden speed or to change direction instantly. When a rider acts "on the spur of the moment," it means they are digging those spurs into the horse's flank without a second thought, reacting purely to the immediate circumstances, not to a pre-planned route. This vivid image of instant, unthinking action, driven by the urgency of the present "moment," quickly transitioned from the stable to common language, becoming a perfect metaphor for any decision made impulsively, without any prior deliberation. It perfectly captures that sudden, decisive burst of action, just like a horse bolting forward.
Examples
- She decided to dye her hair blue on the spur of the moment, much to her family's surprise.
- We booked a flight to Paris on the spur of the moment and were packed and ready to leave within hours.