a vacillating person; coward.
a part or element that undermines the whole of something; a weak link.
Does your language affect your bank account?
New research argues that the answer is yes. Depending on what language you speak, you are more – or less – likely to save for retirement. Your primary tongue may even affect how much you weigh. In January, M. Keith Chen, an associate professor of economics at the School of Management at Yale University, published a working paper on his research about the effect of …
Famous Literary Sibling Rivalries
Read more in this article about some frequently asked questions and fun facts related to our definitions.
Origin of weak sister
First recorded in 1855–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
US informal a person in a group who is regarded as weak or unreliable
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012