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Definition of constant

constant

/ˈkɑːn.stənt/
con · stant

Adverb:constantly
•
Plural:constants
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constant Lexical Profile

constant Game Scores & Validity

• adjective

1

Occurring continuously over a period of time without interruption or letup.

Example

"The engine made a constant humming noise throughout the entire flight."


2

Remaining the same over a period of time; unchanging or invariable in nature, value, or extent.

Example

"The laboratory samples must be kept at a constant temperature to ensure accurate results."


3

Steadfast, faithful, and dependable in affection, allegiance, or purpose.

Example

"She remained a constant friend through all his years of hardship."

Synonyms
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Antonyms
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• noun

1

A situation, quality, or state that does not change over time.

Example

"Change is the only constant in the rapidly evolving technology sector."


2

A quantity or parameter in mathematics, physics, or computer programming that has a fixed, non-varying value.

Example

"The speed of light in a vacuum is a fundamental physical constant."

Synonyms
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Antonyms
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Word Nuance & Usage

"Constant" is often compared with "continuous" and "continual"; "constant" emphasizes steadiness, uniformity, or regular repetition, whereas "continuous" implies no interruption whatsoever and "continual" implies frequent recurrence with brief pauses.

• Rhymes for constant

Word Origin & Etymology

Borrowed in the late 14th century from Old French "constant", from Latin "constantem" (nominative "constans"), the present participle of "constare" meaning "to stand firm, remain steadfast", formed from "com-" (together) and "stare" (to stand).

Cite this Entry


Wordmom. (2026). Definition of Constant. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/constant
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