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

拡散[kakusan] scattering
拡充[kakujuu] expansion
拡大[kakudai] magnification
拡大率[kakudairitsu] rate of magnification
拡張[kakuchou] expansion

拡張化[kakuchouka] enlargement
拡張可能[kakuchoukanou] extensible
拡張倍精度[kakuchoubaiseido] extended double-precision
繰拡げる[kurihirogeru] to unfold
軍拡[gunkaku] military expansion

彼の方[anokata] that gentleman (lady)
此方[kochira] this way (direction close to the speaker or towards the speaker)
此方[konata] this way
其方[sochira] that way (direction distant from the speaker, close to the listener)
何方へ[dochirahe] how are you?

何方も[dochiramo] both
何方様[dochirasama] who
何方付かず[docchitsukazu] gray area
何方でも[donatademo] anyone
遣り方[yarikata] manner of doing

以東[itou] ... and eastward
関東[kantou] Kantou (eastern half of Japan, including Tokyo)
関東弁[kantouben] Kantou dialect
極東[kyokutou] Far East
近東[kintou] Near East

古今東西[kokontouzai] all times and places
広東[kanton] Guangdong (China)
広東語[kantongo] Cantonese
至東京[itarutoukyou] leading to Tokyo
真東[mahigashi] due east