Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.

Class VI. Words Relating to the Sentient and Moral Powers
Section IV. Moral Affections
4. Moral Practice

961. Impurity.

   NOUN:IMPURITY; uncleanness (filth) [See Uncleanness]; immodesty; grossness &c. adj.; indelicacy, indecency, impudicity, obscenity, ribaldry, smut, bawdry, double entente, équivoque [F.]; pornography.
  incontinence, debauchery, libertinism, libertinage, fornication, wenching, venery, dissipation.
  concupiscence, lust, carnality, flesh, salacity; pruriency, lechery, lasciviousness, lewdness, lasciviency [obs.], lubricity; Sadism, Sapphism, Lesbianism, nymphomania, aphrodisia, satyriasis.
  SEDUCTION; defloration, defilement, abuse, violation, stupration, rape; incest.
  SOCIAL EVIL, harlotry, whoredom, concubinage, cuckoldom, adultery, advoutry [obs.], crim. con.; free-love.
  INTRIGUE, amour, amourette, liaison [F.], faux pas [F.], entanglement; gallantry.
  [RESORTS] brothel, bagnio, stew, bawdyhouse, lupanar, house of ill fame, bordel [obs.]; Yoshiwara [Jap.], red-light district.
  HAREM, seraglio, zenana [India].
   VERB:BE IMPURE &c. adj.;, debauch, defile, seduce; prostitute; abuse, violate, rape, stuprate [rare], deflower; commit adultery &c. n.; intrigue.
   ADJECTIVE:IMPURE; unclean (dirty) [See Uncleanness]; not to be mentioned to ears polite; immodest, shameless, indecorous, indelicate, indecent, Fescennine; loose, risqué [F.], coarse, gross, broad, free, equivocal, smutty, fulsome, ribald, obscene, bawdy, pornographic.
  concupiscent, prurient, lickerish, rampant, lustful; carnal, carnal-minded; lewd, lascivious, lecherous, libidinous, erotic, ruttish, must or musty [said of elephants]; salacious, Paphian, voluptuous; goatish, beastly, bestial, incestuous.
  UNCHASTE, light, wanton, licentious, adulterous, debauched, dissolute; of loose character, of easy virtue; frail, gay, riggish [obs.], incontinent, meretricious, rakish, gallant, dissipated; no better than she should be; on the town, on the streets, on the pavé [F.], on the loose [colloq.].