Is this your crossword clue?
"illegal" is also used as a crossword clue. If that's what you saw, the answer is often illicit (7 letters).
Definitions
Forbidden by law or rules
Word origin
Borrowed from French illégal, from Medieval Latin illegalis, from Latin legalis, by surface analysis, il- + legal. In senses relating to immigration, via clipping of illegal alien or illegal immigrant.
Used in a sentence
“This is illegal, you know!”
“Nearly 40 million people live in UK areas with illegal air pollution”
“In all times the Princes in England have done ſomething illegal to get Money: But then came a Parliament and all was well, the People and the Prince kiſt and were Friends, and ſo things were quiet for a while.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Forbidden by law”7 letters
Not quite right?
"Search similar patterns."
I______