adj., n., & v.
--adj.
1. (of a child) born of parents not married to each other.
2 not authorized by law; unlawful.
3 improper.
4 wrongly inferred.
5 physiologically abnormal.
--n. a person whose position is illegitimate, esp. by birth.
--v.tr. declare or pronounce illegitimate.
Derivatives:
illegitimacy n. illegitimately adv.
Etymology: LL illegitimus, after LEGITIMATE