[ adjective, noun il-i-jit-uh-mit; verb il-i-jit-uh-meyt ]
/ adjective, noun ˌɪl ɪˈdʒɪt ə mɪt; verb ˌɪl ɪˈdʒɪt əˌmeɪt /



a person recognized or looked upon as illegitimate.

verb (used with object), il·le·git·i·mat·ed, il·le·git·i·mat·ing.

to declare illegitimate.

Origin of illegitimate

First recorded in 1530–40; il-2 + legitimate

OTHER WORDS FROM illegitimate

il·le·git·i·mate·ly, adverbil·le·git·i·mate·ness, il·le·git·i·ma·tion, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for illegitimate

British Dictionary definitions for illegitimate

/ (ˌɪlɪˈdʒɪtɪmɪt) /


born of parents who were not married to each other at the time of birth; bastard
forbidden by law; illegal; unlawful
contrary to logic; incorrectly reasoned


an illegitimate person; bastard

Derived forms of illegitimate

illegitimacy or illegitimateness, nounillegitimately, 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