| Word | Definitions | Synonyms |
|---|---|---|
| deafen | (verb) make soundproof | - |
| (verb) make or render deaf | Synonyms: deaf | |
| (verb) be unbearably loud | - | |
| stiffen | (verb) become stiff or stiffer | - |
| (verb) make stiff or stiffer | - | |
| (verb) severely restrict in scope or extent | Synonyms: constrain, tighten, tighten up |