fornicor
Could not find fornicarentur in Logeion dictionaries.
fornicarentur Verb: imperfect passive subjunctive 3rd plural of fornicor
fornĭcor, ātus, 1, v. dep. n. [fornix, II],
- to commit whoredom or fornication (eccl. Lat.), Tert. Pudic. 22; Vulg. Gen. 38, 24 et saep.