Born out of wedlock
illegitimate, natural, fatherless; see illegitimate 2.
Of dubious extraction
false, adulterated, spurious; see false 3, impure 1, mixed 1.
An illegitimate child
illegitimate child, natural child, spurious issue, whoreson, love child, child born out of wedlock, nullius filius (Latin), Sunday's child*.
scoundrel, ne'er-do-well, cheat, rascal, son of a bitch* or SOB*, stinker*, rat*, fink*, ratfink*, heel*; see also rascal.
"bastard." YourDictionary, n.d. Web. 24 May 2018. <http://thesaurus.yourdictionary.com/bastard>.
bastard. (n.d.). Retrieved May 24th, 2018, from http://thesaurus.yourdictionary.com/bastard
Born to parents who are not married to each other: