Denshi Jisho — Online Japanese dictionary

精力 せいりょく energy; vigor; vigour; vitality
Common word, Noun 
精力 せいりょくてき energetic; vigorous; vigourous
Na-adjective 
精力絶倫 せいりょくぜつりん being of unbounded energy; being with matchless vigor; having endless sexual stamina
Na-adjective, Noun, No-adjective 

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