criminal Play nounA person who has committed a crime.adjectiveRelating to crime. SYNONYMS agroterroristarmed robberbanditbioterroristburglarconcracksmancrimcrookculpritcyberterroristdefalcatordelinquentecoterroristfelonfraudstergangstergunmanholdupperhousebreakerinfractorjailbirdjuvenile delinquentlawbreakerliferlightymalefactormalfeasantmiscreantmisfeasormuggernarco-terroristoffenderoutlawpeculatorracketeerrapistrobbershopliftersinnerswindlertea leafterroristthieftieftransgressortransporttrespassertrustyvillainwrongdoeryakuzayardbirdyeggyoung offender