お大事に[odaijini] take care of yourself
暗黒大陸[ankokutairiku] Dark Continent (i.e. Africa)
伊勢大神宮[isedaijinguu] the Grand Shrines of Ise
伊勢大廟[isetaibyou] the Grand Shrines of Ise
偉大[idai] greatness

医科大学[ikadaigaku] medical school
医大[idai] medical university
井の中の蛙大海を知らず[inonakanokawazutaikaiwoshirazu] parochial
一大[ichidai] one large ...
一大事[ichidaiji] serious affair

一概に[ichigaini] unconditionally
一般概念[ippangainen] general idea
会社概要[kaishagaiyou] company overview
概して[gaishite] generally
概ね[oomune] in general

概括[gaikatsu] summary
概観[gaikan] general view
概況[gaikyou] outlook
概算[gaisan] approximation
概数[gaisuu] round numbers