大幅【おおはば】
big, large, drastic, substantial, full-width cloth (approx. 72 cm wide for traditional Japanese clothing; approx. 140 cm wide for Western clothing)
大学【だいがく】
university, college, former imperial university of Japan (established under the ritsuryō system for the training of government administrators), the Great Learning (one of the Four Books)
大蔵省【おおくらしょう】
Ministry of Finance (1869-2001), Ministry of the Treasury (under the ritsuryō system)
拡大【かくだい】
expansion, extension, magnification, enlargement, escalation, spread
大手【おおて】
major company, big company, front castle gate, force attacking the front of a castle
大統領【だいとうりょう】
president (of a nation), big man, boss, buddy, mate
大会【たいかい】
mass meeting, convention, rally, conference, assembly, gathering, tournament, competition, contest, meet, grand event
最大【さいだい】
biggest, greatest, largest, maximum
大国【たいこく】
large country, major nation, great power, province of the highest rank (ritsuryō system)
大変【たいへん】
very, greatly, terribly, awfully, immense, enormous, great, serious, grave, dreadful, terrible, difficult, hard, challenging, major incident, disaster
大使【たいし】
ambassador
大切【たいせつ】
important, significant, serious, crucial, precious, valuable, dear, cherished, beloved, careful
大型【おおがた】
large, large-sized, large-scale, big
大半【たいはん】
majority, more than half, most (of), mostly, largely, mainly, predominately, nearly
重大【じゅうだい】
serious, important, significant, grave, weighty
大人【おとな】
adult, grown-up
大臣【だいじん】
cabinet minister
大使館【たいしかん】
embassy
大量【たいりょう】
large quantity, massive (quantity), mass (e.g. mass production, mass transit, mass destruction)
大戦【たいせん】
great war, great battle, world war