| Czech | zpevnit , ztužit |
| Chinese (simplified) | 更硬 , 变硬 , 使 变硬 , 使 僵硬 , 使僵硬 , 使变硬 |
| English | stiffen 2 ( ⊳ ⊳ ⇔ ) |
| Indonesian | mengeraskan |
| Italian | irrigidire |
| Japanese | 硬変させる , 硬直させる , 硬化させる , 固める , 固化させる |
| Malaysian | mengeraskan |
| Hyponym: | rigidify starch buckram |
| Hypernym: | change |
| Causes | stiffen |
| Antonym: | loosen |
| Semantic Field: | changev |
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