最大【さいだい】
biggest, greatest, largest, maximum
拡大【かくだい】
expansion, extension, magnification, enlargement, escalation, spread
大会【たいかい】
mass meeting, convention, rally, conference, assembly, gathering, tournament, competition, contest, meet, grand event
大手【おおて】
major company, big company, front castle gate, force attacking the front of a castle
大蔵省【おおくらしょう】
Ministry of Finance (1869-2001), Ministry of the Treasury (under the ritsuryō system)
大統領【だいとうりょう】
president (of a nation), big man, boss, buddy, mate
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)
大国【たいこく】
large country, major nation, great power, province of the highest rank (ritsuryō system)
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【たいし】
ambassador
大量【たいりょう】
large quantity, massive (quantity), mass (e.g. mass production, mass transit, mass destruction)
大型【おおがた】
large, large-sized, large-scale, big
大人【おとな】
adult, grown-up
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
大臣【だいじん】
cabinet minister
重大【じゅうだい】
serious, important, significant, grave, weighty
巨大【きょだい】
huge, gigantic, enormous