Meaning of spur-of-the-moment

spur-of-the-mo•ment

Pronunciation: (spûr'uv-u-mō'munt), [key]
— adj.
  1. occurring or done without advance preparation or deliberation; extemporaneous; unplanned: a spur-of-the-moment decision.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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