stiffen
v. 使 ... 坚硬；变为浓粘；使坚定；使强硬
名词：stiffener 过去式：stiffened 过去分词：stiffened 现在分词：stiffening 第三人称单数：stiffens
近义词：congeal，harden，thicken，solidify，strengthen，reinforce，toughen，brace，tighten，steel，lace，freeze，tightenup，constrain，loosen，
英英释义
Verb
- become stiff or stiffer;
"He stiffened when he saw his boss enter the room"
- make stiff or stiffer;
"Stiffen the cream by adding gelatine"
- restrict;
"Tighten the rules" "stiffen the regulations"
例句
用作动词(v.)
- This lignification serves to stiffen and strengthen the cells.木质化足以使细胞变硬和增强。
- This sort of grease could not stiffen when the temprature drops.温度下降时，这种润滑脂不会变稠。
- The promise of a reward might stiffen their resolve.答应给他们奖励可以坚定他们的决心。
- He stiffened at the insult.他听到这些侮辱的话，态度强硬起来。