1. 動詞
   等於"stiffen up"
   不及物動詞:
   身體部位等: 變僵硬|變僵硬起來
   不及物動詞:
   身體部位等: 變挺|變堅挺
   (物、結構等)加固
   (物質)變硬
   液體: 變稠, 變稠黏
   態度、想法等: 變強硬|變堅定
   人: 變不自然, 變生硬
   

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   同義字詞
   harden,harshen,strengthen,toughen
   

例句

1. He felt her stiffen in his arms.
2. It will simply stiffen its resistance .
3. He felt her fingers stiffen on his fist.
4. The joints stiffen up when you don't move.
5. She felt her nipple stiffen in expectation.
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