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hardness

Definition, pronunciation, etymology, and usage for the English word. Free spelling reference powered by Wiktionary.

Letters

8 characters

Language

English

word origin

Source

Wiktionary

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Detailed reference entry for the English word "hardness", 8-letters, with pronunciation in International Phonetic Alphabet notation, etymology traced through Germanic and Romance roots where applicable, common misspelling variants catalogued from Hunspell error dictionaries, and usage frequency ranked against the top 100,000 English words in the Wordfreq corpus. PlainSpell covers English, Spanish, Portuguese, French, and German spelling with confusable-pair detection that highlights visually and phonetically similar words. This entry for "hardness" includes synonyms, antonyms, homophones, and cross-language translation pointers sourced from Wiktionary via the kaikki.org extract. Whether you are verifying the correct spelling of "hardness" for academic writing, checking homophone confusion, or exploring etymological origins, this page provides a citation-backed, free reference that requires no sign-up.

hardness is aEnglishnoun. It means: The quality of being hard. Pronounced /ˈhɑɹdnəs/. Often confused with harness and harmless.

Key facts for hardness
PropertyValue
Headwordhardness
LanguageEnglish
Part of speechNoun
IPA/ˈhɑɹdnəs/
Letters8
Frequency rank#23,292
Misspellings tracked11
Confusable pairs5
SourceWiktionary (kaikki.org)

Frequency rank visualization

Position of hardness in English word frequency (lower rank = more common)

Source: Wordfreq corpus

Spelling & Dictionary Insight

The English entry for hardness is 8 letters long, classified as anoun, and transcribed in the International Phonetic Alphabet as /ˈhɑɹdnəs/. Corpus data places it at rank #23,292 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it.Wiktionary records 7 distinct senses for this headword, so context determines which meaning a reader should apply.

Our Hunspell-derived misspelling index lists 11 documented wrong-spelling variants for hardness, with forms such as "ahrdness", "hadrness", and "harddness". Each variant represents a distinct typo pattern that appears often enough in corpora to be worth flagging, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution.It also participates in 5 confusable-pair relationships, "harness", "harmless", "Harkness", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From Middle English hardness, hardnesse, from Old English heardnes, from heard + -nes, equivalent to hard + -ness. Root origin matters for spelling because borrowed morphemes (Greek, Latin, Old French, Old English) carry their source-language orthographic conventions into modern English, which is why historical etymology is often the cleanest predictor of whether a cluster like "-ough", "-eau", or "-tion" will appear. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is hardness, spelled H-A-R-D-N-E-S-S, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.

Definition

  1. 1
    The quality of being hard.
  2. 2
    An instance of this quality; hardship.
  3. 3
    The quantity of calcium carbonate dissolved in water, usually expressed in parts per million (ppm).
  4. 4
    The resistance to scratching, cutting, indentation or abrasion of a metal or other solid material.
  5. 5
    The penetrating ability of electromagnetic radiation, such as x-rays; generally, the shorter the wavelength, the harder and more penetrating the radiation.
  6. 6
    The measure of resistance to damage of a facility, equipment, installation, or telecommunications infrastructure when subjected to attack.
  7. 7
    A measure of how hard a material is.

Etymology

From Middle English hardness, hardnesse, from Old English heardnes, from heard + -nes, equivalent to hard + -ness.

Synonyms

Antonyms

This word in other languages

Common misspellings

Also misspelled as: ahrdness,hadrness,harddness,hardenss,hardnes,hardnness,hardnses,harndess,harrdness,hhardness,hradness

Misspelling Pattern Breakdown

Relative frequency of common misspelling types for hardness

Misspelling Variants of "hardness"

ahrdness8hadrness8harddness9hardenss8hardnes7hardnness9hardnses8harndess8
Misspelling Variants of "hardness"

Frequency rank: #23,292 in English

Frequently Asked Questions

How do you spell "hardness"?
"hardness" is spelled H-A-R-D-N-E-S-S. The IPA pronunciation is /ˈhɑɹdnəs/.
What does "hardness" mean?
As a noun, "hardness" means: The quality of being hard.
What words are commonly confused with "hardness"?
"hardness" is commonly confused with "harness", "harmless", "Harkness". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "hardness"?
The IPA (International Phonetic Alphabet) transcription for "hardness" is /ˈhɑɹdnəs/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "hardness"?
From Middle English hardness, hardnesse, from Old English heardnes, from heard + -nes, equivalent to hard + -ness. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Nearby English words

Other entries that begin with the letter H in our English index:

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Data Source: Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Frequency data from Wordfreq. Misspellings derived from Hunspell dictionaries.