Sexual relations between close relatives, especially immediate family members and sometimes first cousins, usually considered taboo; in many jurisdictions, close relatives are not allowed to marry, and incest is a crime.

(transitive, intransitive) To engage in incestuous sexual intercourse.

One who engages in incest.

Misspelling of incestuous.

(nonstandard) incest

(rare, nonstandard, proscribed) Of, or relating to incest

present participle of incest

plural of incester

simple past tense and past participle of incest

Third-person singular simple present indicative form of incest