| Rating | Solver | Clue |
|---|---|---|
| HARDER | Firmer | |
| STEADIER | Firmer | |
| THICKEN | Become firmer | |
| STRENGTHEN | Make firmer | |
| CONSOLIDATE | Make firmer | |
| CONFIRM | To make firm or firmer; to add strength to; to establish; as, health is confirmed by exercise. | |
| LABIUM | ... thin anterior part (ligula or palpiger) and a firmer posterior plate (mentum). ... | |