Answer | Crossword Clue |
---|---|
HARDEN | Make tougher |
toughened | Make or become tougher |
TIGHTENTHENOOSE | Make things tougher (on) |
toughening | Make or become tougher |
toughens | Make or become tougher |
toughen | to make or become tough or tougher |
hardening | Make or become tougher and more clearly defined |