toughened
tough-ened
adjective
Made stronger and more resistant to damage or difficulty.
"The phone has a toughened screen."
verb
Having been made physically or mentally stronger and more resilient.
"Life had toughened her resolve."
Thesaurus
Synonyms: inured, callous, enured, hardened, thickened, calloused, tough, weather-beaten, treated, sunbaked, tempered, curable
Antonyms: tender, unhardened, untempered, untoughened