| sensationless(adjective, unfeeling, frozen, deadened) |
| set(adjective, hard, firm, solid, stiff) |
| severe(adjective, cool, keen, sharp, intense) |
| sharp(adjective, cool, severe, keen, intense) |
| shivery(adjective, cool, severe, keen, sharp) |
| slack |
| snappy(adjective, cool, severe, keen, sharp) |
| snowy(adjective, cool, severe, keen, sharp) |
| solid(adjective, hard, firm, stiff, tense) |
| solidified(adjective, hard, firm, solid, tense) |
| soporific |
| spiritless |
| spunkless |
| starched(adjective, hard, firm, solid, stiff) |
| starchy(adjective, hard, firm, solid, tense) |
| stark(adjective, hard, firm, solid, tense) |
| steely(adjective, hard, firm, solid, tense) |
| stiff as a board(expression, adjective, idiom, firm, solid) |
| stinging(adjective, cool, severe, keen, sharp) |
| stoic |