1) ガチ勢ぜい Parts ガチ 勢 #51,583 Link copied! ガチぜい [0] Meaning Shirabe Noun Slang hardcore crowd; people who take their hobby or interest very seriously See also: エンジョイ勢 (エンジョイぜい), がち Kanji 勢 セイ forces, energy, military strength Forms ガチ勢#51,583ガチ勢ぜいガチぜいガチぜい