arsonist arsonic • arsonite · · · Info · Definitions · Synonyms · Characters · · arsonist · · Text Latin · · Script 8 · · Length Definitions · · · (noun) a criminal who illegally sets fire to property. Synonyms: incendiary, firebug. · · Noun Definition 1 Synonyms · · · incendiary · · Synonym 1 firebug · · Synonym 2 Characters · · a latin small letter a U+0061 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074