oyakata
/ɔɪəˈkɑːtə/ /əʊjəˈkɑːtə/noun
In Japan: a master, a boss; (Sumo ) the master of a wrestling stable.
Origin
1930s. From Japanese oyakata boss, overseer, sumo stablemaster from oya parent + -kata, suffix denoting person in charge (from kata direction, side, (in honorific use) lady, gentleman).