fornicate

verbs

have sex without being married
fornicate
is derived from
fornication
is derived from
fornicator
is a type of (narrower)
have sexual intercourse with
"This student sleeps with everyone in her dorm"; "Adam knew Eve"; "Were you ever intimate with this man?"
bang, be intimate, bed, bonk, do it, eff, fuck, get it on, get laid, have a go at it, have intercourse, have it away, have it off, have sex, hump, jazz, know, lie with, love, make love, make out, roll in the hay, screw, sleep together, sleep with