Denshi Jisho — Online Japanese dictionary

為 す to do (literary form of suru)
Su verb - precursor to the modern suru, Usually written using kana alone 
為 ため 1: good; advantage; benefit; welfare;
2: sake; purpose; objective; aim;
3: consequence; result; effect;
4: affecting; regarding; concerning
Common word, Noun 
為る する 1:
2: (Usually written using kana alone) to do;
3: to cause to become; to make (into); to turn (into);
4: to serve as; to act as; to work as;
5: to wear (clothes, a facial expression, etc.);
6: to judge as being; to view as being; to think of as; to treat as; to use as;
7: to decide on; to choose; () to be sensed (of a smell, noise, etc.);
8: to be (in a state, condition, etc.);
9: to be worth; to cost;
10: to pass (of time); to elapse;
11: () verbalizing suffix (applies to nouns noted in this dictionary with the part of speech "vs");
12: () creates a humble verb (after a noun prefixed with "o" or "go");
13: to be just about to; to be just starting to; to try to; to attempt to
Common word, Suru verb - irregular 
所為 せい cause; reason; fault
Common word, Noun, Usually written using kana alone 
為す なす 1: to build up; to establish;
2: to form; to become (a state);
3: to accomplish; to achieve; to succeed in;
4: to change into;
5: to do; to perform;
6: (Auxiliary verb) (Archaism) to intend to; to attempt; to try;
7: (Archaism) to have a child
Common word, Godan verb with su ending, Transitive verb 
無為 むい idleness; inactivity
Common word, Na-adjective, Noun, No-adjective 
有為 うい perpetual change caused by karma; vicissitudes of life; that which is made
Noun, Buddhist term 
為手 して 1: doer; performer;
2: (Usually written using kana alone) protagonist (in noh or kyogen); hero; leading part; main character
Noun 
為め ため 1: good; advantage; benefit; welfare;
2: sake; purpose; objective; aim;
3: consequence; result; effect;
4: affecting; regarding; concerning
Irregular okurigana usage, Noun 
為り なり being promoted (shogi)
Noun 
為る なる 1:
2: (Usually written using kana alone) to become; to get; to grow; to be; to reach; to attain;
3: to result in; to prove to be;
4: to consist of; to be composed of;
5: to succeed; to be complete;
6: to change into; to be exchanged for;
7: to play a role;
8: to be promoted (shogi); (Godan verb with ru ending) (Honorific or respectful language) to do ...
Godan verb with ru ending, Intransitive verb 
為替 かわせ 1: money order; draft;
2: exchange (e.g. foreign)
Common word, Noun 
行為 こうい act; deed; conduct
Common word, Noun 
人為 じんい human work; human agency; art; artificiality
Common word, Noun, No-adjective 
為政 いせい governing; administering
Noun 
云為 うんい sayings and doings; words and deeds
Noun, Suru verb 
営為 えいい business; occupation
Noun 
敢為 かんい daring
Noun 
作為 さくい 1: artificiality;
2: act; commission (of a crime)
Noun, Suru verb 
為着 しきせ livery; servant's clothes provided by employers
Noun 
為様 しざま way of doing
Noun 
為初 しぞめ 1: outset; beginning; starting (things);
2: resuming work after the New Year's vacation
Noun 
所為 しょい act; deed; one's doing
Noun, Obscure term 
為業 しわざ act; action; deed
Noun 
為に ために 1: (Usually written using kana alone) for; for the sake of; to one's advantage; in favor of; in favour of; on behalf of;
2: because of; as a result of
Conjunction 
天為 てんい providential; natural
Noun 

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