阿呆陀羅[ahondara] fool
呆け[boke] idiot
呆ける[bokeru] to grow senile
痴呆[chihou] dementia
呆れる[akireru] to be amazed

呆気[akke] taken aback
呆気ない[akkenai] not enough
呆然[bouzen] dumbfounded
呆然自失[bouzenjishitsu] stupor
阿呆鳥[ahoudori] albatross (esp. the short-tailed albatross, Phoebastria albatrus)

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