Denshi Jisho — Online Japanese dictionary

あ 1: Ah! (expression of surprise, recollection, etc.); Oh!;
2: Hey! (to get someone's attention)
Interjection 
亜 あ 1: sub-;
2: -ous (indicating a low oxidation state); -ite
Prefix 
吾 あ I; me
Out-dated or obsolete kana, Pronoun, No-adjective 
唖 あ muteness; speech impairment
Noun 
彼 あ 1:
2: (Usually written using kana alone) that (indicating something distant from both speaker and listener (in space, time or psychologically), or something understood without naming it directly);
3: that person (used to refer to one's equals or inferiors);
4: (Archaism) over there; (Interjection) hey (expression of surprise or suspicion); eh?;
5: (Noun) that (something mentioned before which is distant psychologically or in terms of time)
Out-dated or obsolete kana, Noun 
我 あ I; me
Out-dated or obsolete kana, Pronoun, No-adjective 
ああ like that (used for something or someone distant from both speaker and listener); so
Common word, Adverb 
アド 1: ad; advertisement;
2: (Abbreviation) address
Common word, Noun 
アナ announcer
Common word, Noun, Abbreviation 
あの say; well; errr ...
Common word, Interjection 
アマ amateur
Common word, Noun, Abbreviation 
あら oh; ah
Common word, Interjection, Female term or language 
アイ eye
Noun 
アギ asafetida (Ferula assafoetida)
Noun, Usually written using kana alone 
アシ common reed (Phragmites australis)
Noun, No-adjective, Usually written using kana alone 
アシ assistant
Noun, Suru verb, Abbreviation 
アジ agitation
Noun, Abbreviation 
アジ horse mackerel (Carangidae spp., esp. the Japanese horse mackerel, Trachurus japonicus); jack mackerel; pompano; scad
Noun, Usually written using kana alone 
アッ oh; ah
Interjection 
アト atto-; 10^-18
Noun, Prefix 
アド secondary or supporting actor in a noh or kyogen play
Noun, Usually written using kana alone 
アビ red-throated loon (Gavia stellata)
Noun, Usually written using kana alone 
アブ horsefly; gadfly
Noun, Usually written using kana alone 
アホ fool; simpleton; idiot
Na-adjective, Noun, Sensitive 
アポ appointment
Noun, Abbreviation 
アマ flax (Linum usitatissimum); linseed
Noun, No-adjective 

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