prurient (adj.) Look up prurient at Dictionary.com
1630s, "itching," later, and now exclusively, "having an itching desire" (1650s), especially "lascivious, lewd," (1746), from Latin prurientem (nominative pruriens), present participle of prurire "to itch; to long for, be wanton," perhaps related to pruna "glowing coals," from PIE root *preus- "to freeze; burn" (see freeze (v.)). Related: Pruriently.