大い おおい Also written 大 Meanings big; large; great See also: 大いなる (おおいなる). See also: 大いに (おおいに). Prefix greater (of equal court ranks); upper; senior (also written as 正) See also: 従 (ひろい). Kanji 大 big. Read as おお. Words containing 大い 大いに (おおいに) very 大いなる (おおいなる) big 大いびき (おおいびき) loud snore Jinuma: Japanese Dictionary · Word lists