| stiffen | make stiff or stiffer |
|---|---|
| stiffen | become stiff or stiffer |
| stiffen | restrict |
| stiffen | made or become difficult to move or bend |
| stiffen | stiffened or reinforced with wire |
| stiffen | material used for stiffening something |
| stiffen | the act of becoming stiff |
| stiffen | the process of becoming stiff or rigid |