Denshi Jisho — Online Japanese dictionary

なん difficulty; hardships; defect
Common word, Noun, Noun suffix 
なんい difficulty; relative difficulty
Common word, Noun 
にくい difficult; hard
Common word, Auxiliary adjective 
かたい difficult; hard
Auxiliary adjective 
かたし difficult; hard
Noun or verb acting prenominally, Archaism 
がたい difficult; hard
Auxiliary adjective 
なんぎ affliction; hardship; difficulty; suffering
Na-adjective, Noun, Suru verb 
なんぎ abstruseness; abstruse word
Noun 
なんく difficult phrase
Noun 
なんご difficult word
Noun 
なんじ difficulty
Noun 
なんじ difficult character; complicated kanji
Noun 
なんじ 1: intractable (diseases); hard to cure;
2: rebellious; insurgent; refractory; obstinate
Noun, No-adjective 
なんち 1: intractable (diseases); hard to cure;
2: rebellious; insurgent; refractory; obstinate
Noun, No-adjective 
なんど degree of difficulty
Noun 
なんば predicament; difficult situation
Noun 
なんば mountain Japanese apricot
Noun 
なんぱ shipwreck
Noun, Suru verb 
なんろ rough or steep path
Noun 
なんかい difficult to understand; unintelligible; abstruse
Common word, Na-adjective, Noun 
なんかん barrier; obstacle; difficulty; hurdle; deadlock
Common word, Noun 
なんこう 1: difficult voyage; hard flight;
2: rough going; rough passage; running into trouble; stormy passage
Common word, Noun, Suru verb 
なんだい difficult problem; challenge
Common word, Noun 
なんてん fault; weakness
Common word, Noun 
なんみん refugees
Common word, Noun 
なんもん perplexity; difficult question; difficult problem
Common word, Noun, Suru verb 
なんきつ reprimand
Noun, Suru verb 
なんくせ fault
Noun 
なんくん difficult reading of a kanji
Noun 

Found 85 words. Page one, two, three

You can also

Look up kanji details for 難.

Try a Yahoo Jisho search for 難 .
Try a Goo Jisho search for 難 .
Try a Google search for 難 .