Denshi Jisho — Online Japanese dictionary

熟練 じゅくれん skill; dexterity; proficiency
Common word, Noun, Suru verb, No-adjective 
熟練 じゅくれんこう skilled workman; master mechanic
Noun 
熟練 じゅくれんしゃ expert (in, at); skilled hand; man of experience
Noun 
熟練した じゅくれんした experienced; skilled; proficient
Noun or verb acting prenominally 

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