Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
harden | No | No | Yes | No |
toughen | No | No | Yes | No |
harden (verb) | toughen (verb) |
---|---|
become hard or harder | make tough or tougher |
make hard or harder | |
make healthy | |
cause to accept or become hardened to; habituate | |
harden by reheating and cooling in oil |