step-incest en · NOUN
Etymology
From step- + incest.
Meanings
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(informal, uncountable) Sexual relations with a steprelative.
With "Billy & Billie" LaBute makes his characters face the toil and trouble of a budding relationship, while struggling to carry the additional burden of a very deep-seated taboo of incest, even if it is step-incest.
2016 July 11, Michael Handelzalts, “Siblings Become Lovers in 'Billy & Billie'”, in Haaretz, Tel Aviv: Haaretz Daily Newspaper Ltd., →OCLC, archived from the original on 09 Dec 2023:So I don't want to just send our LW off to Google MILFs. I think if he already feels weird, step-incest is going to make him feel so much weirder.
2023 December 7, Jessica Stoya, Rich Juzwiak, quoting Jessica Stoya, “When It Comes to Sex, I’m Afraid I’ve Become the Creepy Old Man. I Can’t Help It.”, in Slate, New York, N.Y.: The Slate Group, →ISSN, →OCLC, archived from the original on 08 Dec 2023: