Akademik
illegal
1.
adjective
a)
Contrary to or
forbidden
by law, especially
criminal law
.
Moving a pawn backward is an illegal move in chess.
b)
Not permitted by rules
Syn
:
criminal
,
felonious
,
illicit
,
unlawful
,
bogus
Ant
:
lawful
,
legal
2.
noun
An
illegal immigrant
.
Wikipedia foundation
.