Denshi Jisho — Online Japanese dictionary

なんです it is assuredly that ...; can say with confidence that ...
Auxiliary 
ナンプレ sudoku (wasei: number place)
Noun, Abbreviation 
なにごと 1: what; something; everything;
2: nothing (with neg. verb);
3: something or other; unspecified matter
Common word, Noun 
なにとぞ 1: (Humble (kenjougo) language) please; kindly; I beg of you; if it pleases you;
2: by all means; without fail
Common word, Adverb 
なにびと everyone; every person; all; anyone
Common word, Noun 
なにぶん 1: some; any; (a) little; of some kind; of some sort;
2: (Adverb) please;
3: anyway; anyhow; at any rate; after all
Common word, Noun, No-adjective 
なにもの who; what kind of person
Common word, Noun 
なにゆえ why; how
Common word, Adverb, Usually written using kana alone 
なんかい how many times?
Common word, Noun 
南海 なんかい southern sea
Common word, Noun 
難解 なんかい difficult to understand; unintelligible; abstruse
Common word, Na-adjective, Noun 
難関 なんかん barrier; obstacle; difficulty; hurdle; deadlock
Common word, Noun 
軟禁 なんきん lenient confinement or house arrest
Common word, Noun, Suru verb 
難航 なんこう 1: difficult voyage; hard flight;
2: rough going; rough passage; running into trouble; stormy passage
Common word, Noun, Suru verb 
南国 なんこく southern countries
Common word, Noun 
軟骨 なんこつ cartilage
Common word, Noun, No-adjective 
軟式 なんしき (tennis) played with a soft ball
Common word, Noun, No-adjective 
南西 なんせい southwest
Common word, Noun, No-adjective 
なんぜん many thousands
Common word, Noun 
難題 なんだい difficult problem; challenge
Common word, Noun 
難点 なんてん fault; weakness
Common word, Noun 
南東 なんとう southeast
Common word, Noun, No-adjective 
南蛮 なんばん 1:
2: (Archaism) (Derogatory) southern barbarians (formerly used by the Chinese to refer to non-ethnic Chinese to the south);
3: (Archaism) South-East Asia;
4: (Archaism) Western Europe (esp. Spain and Portugal, their South-East Asian colonies, and their goods and people arriving in Japan via the colonies); (Prefix) exotic (esp. Western European or South-East Asian style);
5: (Noun) (in dance, puppetry, etc.) thrusting the right foot and right arm forward at the same time (or left foot and left arm);
6: (Abbreviation) food prepared using chili peppers or Welsh onions
Common word, Noun 
南米 なんべい South America
Common word, Noun 
なんべん how many times; how often
Common word, Noun 
南北 なんぼく south and north
Common word, Noun 

Found 672 words. Page one, two, three, four, five, six, seven, eight, nine, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26

You can also

Look up kanji details for 何 なん.

Try a Yahoo Jisho search for 何 なん .
Try a Goo Jisho search for 何 なん .
Try a Google search for 何 なん .