Become fixed or established.

Make hard or harder.

synonym: harden.

Roget 323: render hard etc. adj.; harden, stiffen, indurate, petrify, temper, ossify, vitrify; accrust^†.   

Dutch: harden

Become hard or harder.

synonym: harden.

Dutch: harden, verharden

Cause to accept or become hardened to; habituate.

synonyms: harden, inure.

Dutch: ten goede komen, harden, verharden

Emotionally hardened:
— Cold-blooded and indurate to public opinion.

synonyms: callous, pachydermatous.

Roget 323: hard, rigid, stubborn, stiff, firm; starch, starched; stark, unbending, unlimber, unyielding; inflexible, tense; indurate, indurated; gritty, proof.    adamant, adamantine, adamantean^†; concrete, stony, granitic, calculous, lithic^†, vitreous; horny, corneous^†; bony; osseous, ossific^†; cartilaginous; hard as a rock etc. n.; stiff as buckram, stiff as a poker; stiff as starch, stiff as as board.    ... show more

Polish: gruboskóry, gruboskórny