unhardened

Synonyms:

untempered

brittle, unannealed

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

Antonyms:

hardened, tempered, toughened, treated

made hard or flexible or resilient especially by heat treatment

curable

capable of being hardened by some additive or other agent

sunbaked

baked or hardened by exposure to sunlight; not burned

show more antonyms...