From Latin licentiōsus, from licentia ("license, freedom").

• IPA: /laɪ.ˈsɛn.ʃəs/

licentious

1. Lacking restraint, or ignoring societal standards, particularly in sexual conduct; sexually unprincipled.
   • 1930, Norman Lindsay, Redheap, Sydney, N.S.W.: Ure Smith, published 1965, →OCLC ↗, page 228:

     His eyes trailed over her feline pose on the sofa, finding her limbs adorable while he tried exasperatedly to extract the truth of licentious revelations from them.

2. Disregarding accepted rules.

• license

• French: voluptueux, leste, libertin, polisson
• German: hemmungslos, zügellos, unzüchtig (sexually), ausschweifend (loosely)
• Italian: licenzioso, dissoluto, libertino, impudico, lascivo, boccaccesco, scostumato
• Portuguese: licencioso, libertino, devasso, impudico, lascivo, libidinoso
• Russian: безнра́вственный
• Spanish: licencioso, disoluto

• French: licencieux
• German: regellos, willkürlich, unorthodox, ungehörig (societal rules), ungebührlich (societal rules), sittenwidrig (societal rules)
• Italian: licenzioso
• Portuguese: licencioso, atrevido, indisciplinado, insolente
• Russian: во́льный