大干 Traditional form: 大幹 Pinyin (reading): dàgàn Definitions: to go all out to work energetically Characters: 大 - big, great, vast, high, deep 干 - arid, dry; to oppose; to offend; to invade Traditional characters: 大 - big, great, vast, high, deep 幹 - arid, dry; to oppose; to offend; to invade