(noun, adjective)


1. contrary to or forbidden by law

- an illegitimate seizure of power

Similar word(s): illegal, illicit, outlaw, outlawed, unlawful

2. of marriages and offspring; not recognized as lawful

Similar word(s): unauthorised, unauthorized, illegal, adulterine, base, baseborn, bastardly, misbegot, misbegotten, spurious, fatherless, unlawful, wrongful, invalid

Sentences with illegitimate as an adjective:

- an illegitimate child

- an illegitimate inference

- an illegitimate word


1. the illegitimate offspring of unmarried parents

Definition categories: person, issue, offspring, progeny