[ kast-awf, -of ]
/ ˈkæstˌɔf, -ˌɒf /
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See synonyms for: castoff / castoffs on Thesaurus.com

thrown away; rejected; discarded: Out of a few pieces of castoff clothing she made herself a presentable new outfit.
a person or thing that has been thrown away or rejected: I refuse to accept second hand merchandise—some other person's castoffs.Many immigrants felt like castoffs, marginalized by national and global economic forces.
Printing. the estimate by a compositor of how many pages copy will occupy when set in type.
verb phrase cast off [kast-awf, of] /ˈkæst ˈɔf, ˈɒf/
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Origin of castoff

First recorded in 1735–45; adjective, noun use of verb phrase cast off
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use castoff in a sentence

British Dictionary definitions for castoff


(prenominal) thrown away; abandonedcast-off shoes
noun castoff
a person or thing that has been discarded or abandoned
printing an estimate of the amount of space that a piece of copy will occupy when printed in a particular size and style of type
verb cast off (adverb)
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

Other Idioms and Phrases with castoff

cast off


Discard, reject, as in He cast off his clothes and jumped in the pool. This term was already used figuratively in Miles Coverdale's translation of the Bible (1535): “Thy mother ... that hath cast off her housebonds and her children” (Ezekiel 16:45).


Let go, set loose, as in He cast off the line and the boat drifted from the dock. [Second half of 1600s]


In knitting, to finish the last row of stitches, that is, take the stitches off the needle and form a selvage. For example, Your sweater is finished; I just have to cast off. [Late 1800s] Also see cast on, def. 1.

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