- Often second thoughts. reservation about a previous action, position, decision, judgment, or the like: He had second thoughts about his decision.
- on second thought, after reconsideration: On second thought, I don't think I'll go.
Origin of second thought
First recorded in 1625–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- (usually plural) a revised opinion or idea on a matter already considered
Idioms and Phrases with second thoughts
see on second thought.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.