Denshi Jisho — Online Japanese dictionary

よう 1: cornerstone; main point; keystone;
2: requirement; need;
3: (Noun or verb acting prenominally) necessary; required
Noun 
かなめ 1: pivot;
2: vital point; cornerstone; keystone;
3: Japanese photinia
Common word, Noun 
ふよう unnecessary; unneeded
Common word, Na-adjective, Noun, No-adjective 
きよう bulletin; memoirs
Noun 
しよう extremely important
Noun 
かんよう essential; vital; crucial; importance
Common word, Na-adjective, Noun, No-adjective 
がいよう outline; summary; abridgment; synopsis
Common word, Temporal noun 
しゅよう chief; main; principal; major
Common word, Na-adjective, Noun 
しょよう required; needed; necessary
Common word, Noun, No-adjective 
じゅよう demand; request
Common word, Noun 
ひつよう 1: necessary; needed; essential; indispensable;
2: (Noun) necessity; need; requirement
Common word, Na-adjective 
ほうよう Buddhist memorial service
Common word, Noun 
きんよう momentous; exigent; urgent; important; vital
Na-adjective, Noun 
けんよう of great prominence or dignity
Na-adjective, Noun 
こうよう elements; essentials; outline
Noun 
さつよう outline; summary; compendium
Noun 
しゅよう absolutely necessary
Na-adjective, Noun 
すうよう importance
Na-adjective, Noun, No-adjective 
せつよう essential; vital
Na-adjective, Noun 
たいよう important point
Noun 
たいよう summary; outline
Noun 
ていよう summary; outline; compendium
Noun 
てきよう summary; outline
Noun 
ゆうよう matter (thing, concept) of high (vital, extreme) importance
Noun 
きょうよう coercion; extortion; compulsion; force
Common word, Noun, Suru verb 

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