spur of the moment

• spur-of-the-moment (attributive use)

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spur of the moment (plural spurs of the moment)

1. (idiomatic) Impulse; short notice; a lack of planning.
   • 1852 January 26, Henry David Thoreau

     Obey the spur of the moment. These accumulated it is that make the impulse and the impetus of the life of genius.

• spur-of-the-moment

• at the drop of a hat
• in the heat of the moment