最大【さいだい】
biggest, greatest, largest, maximum
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)
大手【おおて】
major company, big company, front castle gate, force attacking the front of a castle
大会【たいかい】
mass meeting, convention, rally, conference, assembly, gathering, tournament, competition, contest, meet, grand event
大統領【だいとうりょう】
president (of a nation), big man, boss, buddy, mate
拡大【かくだい】
expansion, extension, magnification, enlargement, escalation, spread
大国【たいこく】
large country, major nation, great power, province of the highest rank (ritsuryō system)
大使【たいし】
ambassador
大切【たいせつ】
important, significant, serious, crucial, precious, valuable, dear, cherished, beloved, careful
大変【たいへん】
very, greatly, terribly, awfully, immense, enormous, great, serious, grave, dreadful, terrible, difficult, hard, challenging, major incident, disaster
大使館【たいしかん】
embassy
大半【たいはん】
majority, more than half, most (of), mostly, largely, mainly, predominately, nearly
大型【おおがた】
large, large-sized, large-scale, big
大人【おとな】
adult, grown-up
重大【じゅうだい】
serious, important, significant, grave, weighty
大臣【だいじん】
cabinet minister
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