incestuous.
Pertaining to or engaging in incest.
Meaning & usage
Pertaining to or engaging in incest.
If you engaged in an incestuous relationship with a family member, that would make you an inbreeder.
Characterized by mutual relationships that are intimate and exclusive to the detriment of outsiders.
Where this word comes from
Etymology tree English incest Proto-Indo-European *h₃ed- Proto-Indo-European *-os Proto-Indo-European *h₃édosder.? Proto-Italic *-ŏ̄dsos? Old Latin -ōssus Latin -ōsus Old French -usbor. Middle English -ous English -ous English incestuous From incest + -ous.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.