- not legally permitted or authorized; unlicensed; unlawful.
- disapproved of or not permitted for moral or ethical reasons.
Origin of illicit
SynonymsSee more synonyms on Thesaurus.com
1. illegitimate, prohibited. See illegal.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- another word for illegal
- not allowed or approved by common custom, rule, or standardillicit sexual relations
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for illicitness
Online Etymology Dictionary, © 2010 Douglas Harper