toughened

Synonyms:

tough

rugged

sturdy and strong in constitution or construction; enduring

experienced, experient

having experience; having knowledge or skill from observation or participation

strong

having strength or power greater than average or expected

callous, calloused, thickened

having calluses; having skin made tough and thick through wear

enured, hardened, inured

made tough by habitual exposure

weather-beaten

tanned and coarsened from being outdoors

Antonyms:

tender, untoughened

physically untoughened

weak

wanting in physical strength

delicate, soft

easily hurt

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Synonyms:

hardened, tempered, treated

curable

capable of being hardened by some additive or other agent

sunbaked

baked or hardened by exposure to sunlight; not burned

Antonyms:

unhardened, untempered

not brought to a proper consistency or hardness

brittle, unannealed

(of metal or glass) not annealed and consequently easily cracked or fractured

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