sinewy：强健的，肌肉发达的

sinew,肌腱，-y,形容词后缀。引申词义强健的，肌肉发达的。

• underage
• undercurrent
• underestimate
• undergo
• undergraduate
• underground
• underhand
• underlie
• underline
• underling
• underlying
• undermine
• underneath
• underpass
• underpin
• underscore
• undersecretary
• undershoot
• understand
• understanding
• understudy
• undertake
• undertaker
• undertaking
• under the rose