(ˈ)in|ses(h)chəwəs, ənˈs-, -)chəs adjective
Etymology: Late Latin incestuosus, from Latin incestus incest + -osus -ous
1.
a. : constituting or involving incest
an incestuous relation
incestuous unions
b. : of, relating to, or guilty of incest
these incestuous beasts
c. : begotten by incest
incestuous offspring
2. : ingrown , derivative , imitative
• in·ces·tu·ous·ly adverb
• in·ces·tu·ous·ness noun -es