weak sister
noun Informal.
a vacillating person; coward.
a part or element that undermines the whole of something; a weak link.
Words nearby weak sister
weak moment, in a, weak nuclear force, weak safety, weak sauce, weak side, weak sister, weak-headed, weak-kneed, weak-minded, weak-willed, weaken
Origin of weak sister
First recorded in 1855–60
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for weak sister
weak sister
noun
US informal a person in a group who is regarded as weak or unreliable
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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