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illegitimize

[ il-i-jit-uh-mahyz ]
/ ɪl ɪˈdʒɪt əˌmaɪz /
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verb (used with object), il·le·git·i·mized, il·le·git·i·miz·ing.

to make illegitimate: The decree illegitimized his heirs.

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Also especially British, il·le·git·i·mise . Also il·le·git·i·ma·tize, especially British, il·le·git·i·ma·tise [il-i-jit-uh-muh-tahyz] /ˌɪl ɪˈdʒɪt ə məˌtaɪz/ .

Origin of illegitimize

First recorded in 1855–60; illegitim(ate) + -ize
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use illegitimize in a sentence

  • Sometimes they would illegitimize two or three generations in order to find a marriage within the forbidden degrees.

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