stiffen
[ˈstɪfən]
vt.& vi.
（使）变硬，（使）强硬;
使绷紧;
使猛烈;
使粘稠;
例句:
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He tried to stiffen his wavering soldiers.
他企图使动摇的士兵坚强起来.
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These clothes restrict your freedom of movement and stiffen up the whole body.
这些衣服使你行动不便，让全身都变得不灵活。
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I felt my body involuntarily stiffen against her invasion of my personal space.
随着她不断侵入我的个人空间，我感觉全身都不由自主地紧绷起来。
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Freshly washed jeans and shirts stiffen in the sun.
来自THETIMES
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She seemed to stiffen at the chime's sound.
来自NEWYORKER
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Humiliation merely served to stiffen his will to succeed
来自A. C. Amor