Denshi Jisho — Online Japanese dictionary

興奮 こうふん excitement; stimulation; agitation; arousal
Common word, Noun, Suru verb 
興奮 こうふんざい stimulant
Noun 
興奮 こうふんせい excitability; irritability
Noun, No-adjective 
興奮 こうふんやく stimulant drug
Noun 
興奮気味 こうふんぎみ being somewhat excited (agitated)
Noun, No-adjective 
興奮状態 こうふんじょうたい excited condition; excited state
Noun 
興奮性細胞 こうふんせいさいぼう excitable cell
Noun 

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