共催 きょうさい joint sponsorship (of an event) #7,188 Meanings noun, takes する, transitive joint sponsorship (of an event); cosponsorship; joint hosting Its kanji 共 キョウ · とも、とも.に、-ども together, both, neither, all, and, alike, with 催 サイ · もよう.す、もよお.す sponsor, hold (a meeting), give (a dinner)