Synonyms of hardness in English:

hardness


See US English definition of hardness

See UK English definition of hardness

See Spanish definition of dureza

noun

1‘the hardness of the ground’

SYNONYMS
firmness, solidity, stiffness, rigidity, denseness, inflexibility, inelasticity, resistance
ANTONYMS

softness

2‘there was a core of calculating hardness to this man’

SYNONYMS
hard-heartedness, heartlessness, cold-heartedness, lack of compassion, lack of feeling, lack of sentiment, callousness, unkindness, flintiness, steeliness
harshness, severity, strictness, sternness, toughness
ANTONYMS

compassion, kindness