stiffen

1.[i][t]（尤指因气愤或害怕，使浑身或身体的一部分）变僵硬，变僵直，绷紧to make yourself or part of your body firm, straight and still, especially because you are angry or frightened

2.[i][t]（使）难以弯曲，难以活动，发僵to become, or to make sth become, difficult to bend or move

3.[t][i]~ (sth)（使）变强硬，变坚定to make an attitude or idea stronger or more powerful; to become stronger

1.加强

2.使硬化,使挺,使僵硬

3.使绷紧

4.使猛烈

5.使生硬呆板

6.使浓厚

7.使黏腻

8.变硬,变挺,变僵硬

9.变强,加强

10.〈口〉(物价等)上涨,(市面)硬

11.变猛烈

12.变顽固;变不自然,变生硬

13.变黏,变稠,变浓厚

14.变得费劲

1.to suddenly hold your body in a stiff way, often because you become nervous, worried, angry, or unfriendly

2.if your resolve or resistance stiffens, or if you stiffen it, you become more determined

3.to become stiff and difficult to move; to make something stiff