Denshi Jisho — Online Japanese dictionary

権威 けんい authority; power; influence
Common word, Noun 
権威 けんいしゃ an authority
Noun 
権威 けんいすじ authoritative sources
Noun 
権威 けんいてき authoritarian
Na-adjective 
権威主義 けんいしゅぎ authoritarianism
Noun, No-adjective 
権威主義政府 けんいしゅぎせいふ authoritarian government
Noun 

You can also

Look up kanji details for 権威.

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