muscular

Adjective

• (of a person) possessing physical strength and weight; rugged and powerful
  • a hefty athlete
    
  • a muscular boxer
    
  • powerful arms
    

• having or suggesting great physical power or force
  • the muscular and passionate Fifth Symphony
    

• having a robust muscular body-build characterized by predominance of structures (bone and muscle and connective tissue) developed from the embryonic mesodermal layer

• of or relating to or consisting of muscle
  • muscular contraction
    

Related words

• Synonyms: 
  brawny , hefty , powerful , sinewy , mesomorphic
• Antonyms: 
  ectomorphic , endomorphic , pyknic