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illegitimatize

[il-i-jit-uh-muh-tahyz]
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verb (used with object), il·le·git·i·ma·tized, il·le·git·i·ma·tiz·ing.
  1. to make illegitimate: The decree illegitimatized his heirs.
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Also especially British, il·le·git·i·ma·tise.

Origin of illegitimatize

First recorded in 1805–15; illegitimate + -ize
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018