Synonyms for Baseborn:

adj.

all (adjective)
base, humble, lowly.
illegitimate (adjective)
spurious, misbegotten.
low (adjective)
lowborn.
lowly (adjective)
humble, plebeian, base, ignoble, unwashed, Declassed, common.

n.

unlawful, natural, spurious, kin, law, misbegotten. over, unwashed, common, plebeian, vulgar, Declassed, ignoble. baseborn (noun)
illegitimate, humble, lowborn, lowly, base.

Other synonyms:

Declassed. unwashed, misbegotten, plebeian, vulgar. ignoble. unlawful. spurious. common. natural. Other relevant words:
ignoble, unlawful, common, over, vulgar, law, plebeian, Declassed, kin, natural, misbegotten, spurious, unwashed.