| ̷ ̷ ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷ adjective
Etymology: from the phrase ( on the ) spur of the moment
: occurring or developing without premeditation : hastily extemporized
cumulative effect accomplished through … what had previously seemed merely spur-of-the-moment ideas — Irving Kolodin
a human equation in live TV that gives it spur-of-the-moment touches — Dinah Shore