Denshi Jisho — Online Japanese dictionary

善 ぜん good; goodness; right; virtue
Common word, Noun 
善い いい 1: (Usually written using kana alone) good; excellent; fine; nice; pleasant; agreeable;
2: sufficient (can be used to turn down an offer); ready; prepared;
3: profitable (e.g. deal, business offer, etc.); beneficial;
4: OK
Adjective 
善し えし good; excellent; fine; nice; pleasant; agreeable
Out-dated or obsolete kana, Expression 
善い よい 1: (Usually written using kana alone) good; excellent; fine; nice; pleasant; agreeable;
2: sufficient (can be used to turn down an offer); ready; prepared;
3: profitable (e.g. deal, business offer, etc.); beneficial;
4: OK
Adjective 
善う よう 1: (Usually written using kana alone) well; properly; skillfully;
2: often
Adverb 
善き よき 1: goodness;
2: (Pre-noun adjectival) good
Noun 
善く よく 1: (Usually written using kana alone) nicely; properly; well; skillfully;
2: frequently; often
Adverb 
善げ よげ seeming good
Na-adjective 
善し よし good; excellent; fine; nice; pleasant; agreeable
Expression 
善意 ぜんい 1: virtuous mind;
2: good intentions; good will;
3: positive mindset;
4: bona fides (legal good faith)
Common word, Noun 
善果 ぜんか good results
Noun 
善狐 ぜんこ good fox
Noun 
善後 ぜんご giving careful thought to the future; finishing up carefully
Adverbial noun, Temporal noun 
善事 ぜんじ good thing; good deed
Noun 
善美 ぜんび the good and the beautiful
Na-adjective, Noun 
善くも よくも How dare ...
Common word, Adverb, Usually written using kana alone 
善かれ よかれ all for the best; what is right
Expression, Usually written using kana alone 
善くぞ よくぞ how admirably; how wonderfully; how skillfully
Adverb, Usually written using kana alone, Polite language 
善さげ よさげ seemingly good; (of) good appearance; looking good
Na-adjective, Colloquialism, Usually written using kana alone 
善さ気 よさげ seemingly good; (of) good appearance; looking good
Na-adjective, Colloquialism, Usually written using kana alone 
善悪 ぜんあく good and evil
Common word, Noun 
善戦 ぜんせん fight a good fight
Common word, Noun, Suru verb 
善隣 ぜんりん good neighbour; good neighbor
Common word, Noun 
善感 ぜんかん successful vaccination; positive reaction
Noun, Suru verb 
善管 ぜんかん good management; good manager
Noun, Abbreviation 
善行 ぜんこう good deed; good conduct; benevolence
Noun, No-adjective 
善根 ぜんこん good deeds; charity
Noun 

Found 80 words. Page one, two, three

You can also

Look up kanji details for 善.

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