"criminal" in the noun sense
1. criminal, felon, crook, outlaw, malefactor
someone who has committed a crime or has been legally convicted of a crime
"criminal" in the adjective sense
1. condemnable, criminal, deplorable, reprehensible, vicious
bringing or deserving severe rebuke or censure
"a criminal waste of talent"
"a deplorable act of violence"
"adultery is as reprehensible for a husband as for a wife"
2. criminal
guilty of crime or serious offense
"criminal in the sight of God and man"
3. criminal, felonious
involving or being or having the nature of a crime
"a criminal offense"
"criminal abuse"
"felonious intent"
Source: WordNet® (An amazing lexical database of English)
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