Denshi Jisho — Online Japanese dictionary

ない 1: not (verb-negating suffix; may indicate question or invitation with rising intonation);
2: () emphatic suffix (used after the root of an adjective)
Common word, Auxiliary adjective 
内 うち 1: inside; within;
2: while;
3: among; amongst; between;
4: () we (referring to one's in-group, i.e. company, etc.); our;
5: my spouse;
6: (Noun)
7: (Archaism) imperial palace grounds;
8: (Archaism) emperor; () (Kansai dialect) I (primarily used by women and children); me
Common word, Noun, No-adjective 
内 ない inside; within
Suffix 
無い ない 1:
2: (Usually written using kana alone) nonexistent; not being (there);
3: unpossessed; unowned; not had;
4: unique;
5: indicates negation, inexperience, unnecessariness or impossibility; (Auxiliary adjective) (after the ren'youkei form of an adjective) not ...;
6: (after the -te form of a verb) to not be...; to have not ...
Common word, Adjective 
亡い ない dead
Adjective 
地震 ない earthquake
Out-dated or obsolete kana, Noun 
ナイス nice
Common word, Noun 
ナイト 1: night;
2: knight
Common word, Noun 
ナイフ knife
Common word, Noun 
ナイル Nile (river)
Common word, Noun, Usually written using kana alone 
ナイン 1: nine;
2: (Interjection) no (ger: nein)
Common word, Noun 
ないか 1: (used to ask a question in the negative) won't (hasn't, isn't, doesn't, etc.);
2: (used to make invitations, express desires or give indirect commands) won't you
Expression 
ないで 1: without doing ...;
2: (Auxiliary) used in sentence-final position as an indirect prohibition
Conjunction, Auxiliary 
内気 うちき bashfulness; shyness; reserve; timidity
Common word, Na-adjective, Noun, No-adjective 
内輪 うちわ 1: moderate; private matter; family circle; the inside;
2: conservative;
3: pigeon-toed
Common word, Na-adjective, Noun, No-adjective 
内科 ないか 1: internal medicine, i.e. treatment by medical procedures rather than surgical procedures;
2: department of internal medicine (hospital, etc.)
Common word, Noun, No-adjective 
内規 ないき private regulations; bylaws; internal rules; tradition
Common word, Noun 
乃至 ないし 1: from ... to; between ... and;
2: or
Common word, Conjunction 
内示 ないじ unofficial announcement
Common word, Noun, Suru verb 
内部 ないぶ interior; inside; internal
Common word, Noun, No-adjective 
内務 ないむ internal or domestic affairs
Common word, Noun 
内野 ないや (baseball) infield; diamond
Common word, Noun 
内着 うちぎ 1: everyday clothes;
2: underwear
Noun 
内湯 うちゆ indoor bath using water from a hot-spring
Noun 
内海 うつみ inlet; bay; inland sea
Noun 
内障 そこひ any visual disorder caused by a problem within the eye (i.e. glaucoma, amaurosis, etc.)
Noun 

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