Dictionary.com
Word of the Day
Crossword Solver
Everything After Z
Thesaurus.com
Dictionary.com
Thesaurus.com
Try Our Apps
definitions
Search
synonyms
lose one's cool
see under keep one's cool.
Show More
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
