Occurring or made hastily on impulse: a spur-of-the moment choice. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "spur-of-the-moment" in a sentence
"To McCreath, 40 was a chance to step back in time "to our old life of minimal responsibility and spur-of-the-moment travel and staying out late and eating and drinking anything we like.""
"In my case, I was very lucky to say yes to a spur-of-the-moment dinner invitation, where I met MJ Rose, an amazingly generous author, who introduced me to Writer's House and my agent, Amy"
"This pompous spur-of-the-moment phrase plays over and over in his mind, a rebuke."