Dictionary.com
Thesaurus.com

take leave of

Idioms  

  1. Also, take one's leave of . Depart from, say good-bye to. For example, Sorry but I have to take leave of you now , or After the movie we'll take our leave of you . [Mid-1200s]

  2. take leave of one's senses . Behave irrationally, act crazy, as in Give them the keys to the house? Have you taken leave of your senses? [Late 1800s] Also see come to one's senses .

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.