English
gangism
From gang + -ism.
Formed from gang + -ism
Proto-Indo-European *ǵʰengʰ- ‘to step, walk’
…
Proto-Germanic *gangaz ‘going, way’
Proto-West Germanic *gang ‘way, going’
Old English gang ‘journey; way, passage’
Middle English gang ‘journey; company’
English gang
Today it means
noun The criminal or antisocial behaviour of gangs.
Language periods are conventional ranges, not dates for this word.
Etymograph / gangism