| harden | cause to accept or become hardened to |
|---|---|
| harden | make fit |
| harden | harden by reheating and cooling in oil |
| harden | become hard or harder |
| harden | make hard or harder |
| harden | small genus of Australian woody vines with small violet flowers |
| harden | vigorous climber of the forests of western Australia |
| harden | converted to solid form (as concrete) |
| harden | used of persons |
| harden | made hard or flexible or resilient especially by heat treatment |
| harden | made tough by habitual exposure |
| harden | the act of making something harder (firmer or tighter or more compact) |