Denshi Jisho — Online Japanese dictionary

大 おお big; large
Prefix 
大 だい 1: the large part of;
2: big; large; great;
3: (Suffix) approximate size; no larger than;
4:
5: (Abbreviation) -university; (Noun) large (e.g. serving size); loud (e.g. volume setting)
Prefix 
大刀 たち long sword
Common word, Noun 
大鋸 おが large saw; framed pit saw
Noun 
大御 おみ honorific or polite prefix
Prefix 
大口魚 たら 1: gadid (any fish of the family Gadidae, inc. cod, haddock, whiting and pollack);
2: Pacific cod (Gadus macrocephalus)
Noun 
大 おおい 1:
2: (Archaism) greater (of equal court ranks); upper; senior; () a great deal; very much
Prefix 
大 おおき 1:
2: (Archaism) great; grand; large;
3: greater (of equal court ranks); upper; senior; () a great deal; very much
Irregular okurigana usage, Prefix 
偉大 いだい greatness
Common word, Na-adjective, Noun 
医大 いだい medical university; medical school; med school
Common word, Noun, Abbreviation 
大手 おおて 1: front castle gate;
2: both arms open; outstretched arms;
3: major companies
Common word, Noun, No-adjective 
大野 おおの large field
Common word, Noun 
大屋 おおや landlord; landlady
Common word, Noun 
大人 おとな adult
Common word, Noun 
過大 かだい excessive; too much; unreasonable
Common word, Na-adjective, Noun, No-adjective 
誇大 こだい exaggeration; hyperbole
Common word, Na-adjective, Noun 
私大 しだい private university or college
Common word, Noun, Abbreviation 
粗大 そだい coarse or rough
Common word, Na-adjective, Noun 
大尉 たいい captain (Army, U.S. Marine Corps, USAF); lieutenant (Navy); flight lieutenant (RAF, RAAF, RNZAF, etc.)
Common word, Noun 
大家 たいか expert
Common word, Noun 
大火 たいか large fire
Common word, Noun 
大河 たいが large river
Common word, Noun 
大気 たいき atmosphere
Common word, Noun 
大義 たいぎ great cause; moral law; justice
Common word, Noun 
大佐 たいさ colonel; (navy) captain
Common word, Noun 
大差 たいさ great difference
Common word, Noun, No-adjective 

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