Skip to main content
PlainSpell

constant

/ˈkɑnstənt/adjective, noun

constant is spelled C-O-N-S-T-A-N-T. The wrong spelling people search most is constatn: about 50 Bing searches a month in the United States (September 2025 to August 2026), about 1 in 67 of all searches for the word. Constant is an adjective meaning “Unchanged through time or space; permanent”.

How do you spell constant?

Constant is spelled C-O-N-S-T-A-N-T. 2 wrong spellings are searched or written often enough to measure; together they are about 1 in 38 of the searches for constant in either form.

constantthe right spelling3,310 searches a month
constatnn and t swapped50 searches a month
constandd in place of t40 searches a month

Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026). Wrong spellings are taken from Wiktionary entries tagged "misspelling" and its obsolete or nonstandard forms, Wikipedia's Lists of common misspellings and the codespell dictionary, then measured. The proofreader's marks show the change that corrects each one.

What does constant mean?

adjective

  1. 1

    Unchanged through time or space; permanent.

  2. 2

    Consistently recurring over time; persistent.

  3. 3

    Steady in purpose, action, feeling, etc.

  4. 4

    Firm; solid; not fluid.

  5. 5

    obsoleteConsistent; logical.

  6. 6

    Bounded above by a constant.

    constant time   constant space

noun

  1. 1

    That which is permanent or invariable.

  2. 2

    A quantity that remains at a fixed value throughout a given discussion or operation.

  3. 3

    Any property of an experiment, determined numerically, that does not change under given circumstances.

  4. 4

    An identifier that is bound to an invariant value; a fixed value given a name to aid in readability of source code.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

How do you pronounce constant?

  • UK /ˈkɒnstənt/
  • US /ˈkɑnstənt/

Constant has 2 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-us-constant.ogg, Wikimedia Commons (author and licence on each file's page).

Forms of constant

  • more constant comparative
  • most constant superlative
  • constants plural

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

How common is constant?

Constant appears 35 times per million words in written English, the 2,785th most frequent word form in the list. The list counts every capitalisation together, so this includes Constant, the name.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

How do you abbreviate constant?

Wiktionary records 2 abbreviations of constant: cons., const..

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Constant in Spanish, French, German and Portuguese

LanguageWords
Frenchconstant (unchanged through time), constante (algebra: quantity that remains fixed)
Germanbeständig, konstant (unchanged through time), regelmäßig, ständig, stetig (consistently recurring over time), Konstante (that which is permanent or invariable)
Portugueseconstante (unchanged through time)
Spanishconstante (unchanged through time), perseverante, constable (disused) (steady)

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.

Where does constant come from?

From Middle English constant, from Old French constant, from Latin constantem, accusative of constans, from cōnstāre (“to stand firm”). Displaced native Old English singal.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).