Dictionary/合作がっさくGassaku合作 (Gassaku) is a Japanese noun meaning “collaboration, joint work”.Meaningsnoun, suru verb, transitive verbcollaboration; joint workKanji in 合作合fit作makeRelated words作るto make幸せhappiness付き合うto associate with似合うto suit場合case出会うto meet (by chance)合うto come together取りあえずfirst of all知り合うto get to know each other作品work (e.g. book, film, painting, composition)間に合うto be in time (for)合わせるto match (rhythm, speed, etc.)