highfather UK /ˈhaɪˌfɑː.ðə/US /ˈhaɪˌfɑː.ðɚ/ noun1 •(rare) A respected, high-ranking male elder or leader; a patriarch; a forefather; a grandfather.There is no active worship for the Highfather, except at meal time, when all Mischta look into the sky and offer a symbolic thanks to him, whom they call "the Grandfather." — 1990 formshighfathers