The hardness of diamond is such that it can cut glass.
Source: tatoeba (41113)
Hardness
//ˈhɑɹdnəs//
Synonyms for "hardness" (182 found)
Ranked by relevance and common usage.
Closest matches (37)
Strong matches (54)
difficultnessdifficultydurabilityesotericafirmnessflintinessformidable defensesfundamentalismgluinessgrimnesshairinesshard hearthard shellhardenednesshardheartednesshardinesshardness of hearthardshipharshnessheart of stone
Show 27 more words
heartlessnessimpenetrabilityimpenitenceimpenitentnessimpermeabilityimperviousnessimpliabilityimporosityinclemencyincompressibilityindurationinexorabilityinexorablenessinflexibilityinfrangibilityinsensitivenessinsensitivityinsolenceintricacyinurednessirrepentancejammednessknottinesslaboriousnesslastingnessleatherlikenessmercilessness
Related words (91)
nonrepentanceobduracyobduratenessobstinacyonerousnessoppressivenessorthodoxyphilistinismpitilessnessprecisianismprofoundnessprofunditypurismpuritanismreconditenessrelative densityrelentlessnessremorselessnessresistancerhinoceros hide
Show 59 more words
rigidityrigidnessrigorrigorousnessropinessroughnessruggednessruthlessnessseared conscienceshort shriftsoliditysolidnesssoundnessspecific gravityspissitudestabilitystaminastaunchnesssternnessstiffnessstoninessstoutnessstrengthstrenuousnessstringencystringinessstubbornnesssturdinesstempertenacitytender merciesthick skinthicknesstoilsomenesstoughnesstroublesomenessunabjectnessunbendingnessunbreakabilityunbreakablenessuncompassionatenessuncompromisingnessuncontritenessunfeelingunforgivingnessungentlenessunmercifulnessunnaturalnessunrelentingnessunremorsefulnessunresponsivenessunsympatheticnessunyieldingnessvicissitudevigorviscidityviscosityviscousnessvitality
Related word relations
OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.
More general
12 entriesMore specific
3 entriesAntonyms
2 entriesSynonyms
2 entriesRelated terms
17 entriesShowing 16 of 17 words.
derived
8 entriesderived from
1 entrieshas context
2 entriesis a
8 entriesrelated to
4 entriesTranslations
33 translations across 30 languages.
Ancient Greek
1 entries- σκληρότης noun (quality of being hard)
Armenian
2 entries- կարծրություն noun (quality of being hard)
- պնդություն noun (quality of being hard)
Bulgarian
2 entries- издръжливост noun (quality of being hard)
- твърдост noun (quality of being hard)
Catalan
1 entries- duresa noun (quality of being hard)
Czech
1 entries- tvrdost noun (quality of being hard)
Dutch
1 entries- hardheid noun (quality of being hard)
French
1 entries- dureté noun (quality of being hard)
Friulian
1 entries- durece noun (quality of being hard)
Galician
1 entries- dureza noun (quality of being hard)
German
1 entries- Härte noun (quality of being hard)
Hindi
1 entries- कठोरता noun (quality of being hard)
Hungarian
1 entries- keménység noun (quality of being hard)
Ido
1 entries- hardeso noun (quality of being hard)
Italian
1 entries- durezza noun (quality of being hard)
Latin
1 entries- dūritās noun (quality of being hard)
Latvian
1 entries- cietība noun (quality of being hard)
Malayalam
1 entries- കാഠിന്യം noun (quality of being hard)
Norwegian Bokmål
1 entries- hardhet noun (quality of being hard)
Occitan
1 entries- duretat noun (quality of being hard)
Polish
1 entries- twardość noun (quality of being hard)
Portuguese
1 entries- dureza noun (quality of being hard)
Quechua
1 entries- sinchi noun (quality of being hard)
Russian
1 entries- твёрдость noun (quality of being hard)
Sardinian
1 entries- duresa noun (quality of being hard)
Spanish
2 entries- dureza noun (quality of being hard)
- duricia (disused) noun (quality of being hard)
Swedish
1 entries- hårdhet noun (quality of being hard)
Tagalog
1 entries- katigasan noun (quality of being hard)
Thai
1 entries- ความแข็ง noun (quality of being hard)
Turkish
1 entries- zorluk noun (quality of being hard)
Walloon
1 entries- durté noun (quality of being hard)
Sample sentences
11 total sentences available.
The hardness of diamond is 10.
Source: tatoeba (41114)
One of the qualities of steel is hardness.
Source: tatoeba (278756)
The hardness of God is kinder than the softness of men, and His compulsion is our liberation.
Source: tatoeba (733843)
Showing 4 of 11 available sentences.
Keep exploring
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.