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

亜米利加合衆国[amerikagasshuukoku] United States of America
伊達衆[dateshuu] dandy
一切衆生[issaishujou] all living creatures
烏合の衆[ugounoshuu] disorderly crowd
下衆張る[gesubaru] to be churlish

会衆[kaishuu] audience
観衆[kanshuu] spectators
勤労大衆[kinroutaishuu] working people
公衆[koushuu] the public
公衆ブース[koushuubuusu] public booth

阿吽の呼吸[aunnokokyuu] the harmonizing, mentally and physically, of two parties engaged in an activity
阿呆陀羅[ahondara] fool
阿蘭陀[oranda] Holland
阿ねる[omoneru] to flatter
阿多福[otafuku] homely woman (esp. one with a small low nose, high flat forehead, and bulging cheeks)

阿鼻叫喚[abikyoukan] agonizing cries
阿片窟[ahenkutsu] opium den
阿弥陀[amida] Amitabha
阿呍[aun] Om
阿諛[ayu] flattery