constant

adjective
con·​stant | \ ˈkän(t)-stənt How to pronounce constant (audio) \

Definition of constant

 (Entry 1 of 2)

1 : marked by firm steadfast resolution or faithfulness : exhibiting constancy of mind or attachment a constant friend
2 : invariable, uniform a constant flow should be stored at a constant temperature
3 : continually occurring or recurring : regular a constant annoyance suffers from constant headaches

constant

noun

Definition of constant (Entry 2 of 2)

: something invariable or unchanging: such as
a : a number that has a fixed value in a given situation or universally or that is characteristic of some substance or instrument
b : a number that is assumed not to change value in a given mathematical discussion
c : a term in logic with a fixed designation

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Other Words from constant

Adjective

constantly adverb

Choose the Right Synonym for constant

Adjective

faithful, loyal, constant, staunch, steadfast, resolute mean firm in adherence to whatever one owes allegiance. faithful implies unswerving adherence to a person or thing or to the oath or promise by which a tie was contracted. faithful to her promise loyal implies a firm resistance to any temptation to desert or betray. remained loyal to the czar constant stresses continuing firmness of emotional attachment without necessarily implying strict obedience to promises or vows. constant friends staunch suggests fortitude and resolution in adherence and imperviousness to influences that would weaken it. a staunch defender of free speech steadfast implies a steady and unwavering course in love, allegiance, or conviction. steadfast in their support resolute implies firm determination to adhere to a cause or purpose. a resolute ally

continual, continuous, constant, incessant, perpetual, perennial mean characterized by continued occurrence or recurrence. continual often implies a close prolonged succession or recurrence. continual showers the whole weekend continuous usually implies an uninterrupted flow or spatial extension. football's oldest continuous rivalry constant implies uniform or persistent occurrence or recurrence. lived in constant pain incessant implies ceaseless or uninterrupted activity. annoyed by the incessant quarreling perpetual suggests unfailing repetition or lasting duration. a land of perpetual snowfall perennial implies enduring existence often through constant renewal. a perennial source of controversy

Examples of constant in a Sentence

Adjective

He suffers from constant headaches. Her constant chatter was a nuisance. The house is in constant need of repairs. The scar serves as a constant reminder of the accident. a problem demanding constant attention The equipment should be stored at a constant temperature. He kept the car's speed constant. She has struggled to maintain a constant weight. They remained constant friends throughout their lives.

Noun

Her job was the one constant in her life.
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Recent Examples on the Web: Adjective

But there isn’t any doubt that Wagner will be a constant on the roster and consistently productive on the field. Matt Calkins, The Seattle Times, "Is Bobby Wagner the most underappreciated superstar in Seattle sports history?," 20 Feb. 2019 Fashion has been a constant in Balinska’s life in part thanks to her mother, Lorraine Pascale, the former model turned chef turned best-selling author. Janelle Okwodu, Vogue, "Meet the Charlie’s Angels Star Who Stole the Show at Couture Week in Paris," 25 Jan. 2019 How come your food is just like your ... there’s this constant indecision of food. Eric Johnson, Recode, "Why Sweetgreen thinks like a tech company," 17 Dec. 2018 The legendary makeup artist is a constant source of inspiration, from fresh-faced looks to unexpected color and finish combinations. Marci Robin, Allure, "Pat McGrath Labs' Holiday Collection Features Three New Eye Palettes and a New Lipstick in Eight Shades," 13 Oct. 2018 These types of plants, like Sansevieria (one of their favorites) and Epipremnum aureum, don't require constant attention to water levels or special enclosures. Danielle Tullo, House Beautiful, "4 Ingenious Secrets To Keeping Plants Alive—And Thriving," 28 Sep. 2018 Seasoned wood burns efficiently, doesn't require constant attention to stay lit, and creates less pollution in the form of smoke (unburned wood vapor). Roy Berendsohn, Popular Mechanics, "The Right Way to Stack Firewood," 28 Sep. 2018 The boy’s mother told authorities the boy suffers from seizures, cannot walk because of severe medical issues, and requires constant attention. Mary Hudetz, The Seattle Times, "Kids found in rags in New Mexico amid tale of guns, exorcism," 6 Aug. 2018 The White House counsel's office saw him as a constant source of problems, officials said. Josh Dawsey, chicagotribune.com, "How did Scott Pruitt survive months of controversy? By preserving his relationship with Trump at all costs," 6 July 2018

Recent Examples on the Web: Noun

Their stories all share one constant: Somebody at their college cared about them, and went above and beyond to help. Katherine Long, The Seattle Times, "Students who beat steep odds credit Washington educators who wouldn’t give up on them," 4 Feb. 2019 The laws of physics in our universe include a number of fundamental constants, such as the speed of light. Charles Q. Choi, Space.com, "Why Alternate Universes Might Also Host Life Around their Stars," 26 Sep. 2018 Miazga, 22, was a crucial constant (and even an occasional captain) for a Vitesse Arnhem side that finished sixth in the Netherlands and qualified for the 2018-19 Europa League. Brian Straus, SI.com, "Christian Pulisic Returns as USMNT Roster Focuses on Youth for Upcoming Friendlies," 20 May 2018 Tucker won’t be so hot every night, but his defense is a constant, and don’t leave him alone in the corners. Bruce Jenkins, San Francisco Chronicle, "In Warriors-Rockets smallball world, it’s Hamptons 5 vs. the Tuckwagon," 17 May 2018 The one constant through all of this -- LeBron James. Ted Crow, cleveland.com, "Cleveland Cavaliers, LeBron James vs. Indiana Pacers: Crowquill," 15 Apr. 2018 But there's been one constant: ambition, pure and unadulterated. Jocelyn Noveck, Town & Country, "Why Is Hillary Clinton Still So Hard to Define?," 25 July 2016 Vicary cites the constant, and often depressing, 24/7 news cycle as another factor. Jessica Radloff, Glamour, "The Secret Formula Behind Hallmark's Christmas Movie Empire," 30 Nov. 2018 His 1905 theory of special relativity calls the speed of light a cosmic constant, and his claim has held up for more than 100 years. Jon Fobes, cleveland.com, "Speed-of-light story made me an April Fool: Beyond Belief (opinion video)," 11 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'constant.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of constant

Adjective

14th century, in the meaning defined at sense 1

Noun

1832, in the meaning defined above

History and Etymology for constant

Adjective and Noun

Middle English, from Middle French, from Latin constant-, constans, from present participle of constare to stand firm, be consistent, from com- + stare to stand — more at stand

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Statistics for constant

Last Updated

12 Mar 2019

Look-up Popularity

Time Traveler for constant

The first known use of constant was in the 14th century

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More Definitions for constant

constant

adjective

English Language Learners Definition of constant

 (Entry 1 of 2)

: happening all the time or very often over a period of time
: staying the same : not changing
formal + literary : always loyal

constant

noun

English Language Learners Definition of constant (Entry 2 of 2)

: something that stays the same : something that does not change
technical : a quantity or number whose value does not change

constant

adjective
con·​stant | \ ˈkän-stənt How to pronounce constant (audio) \

Kids Definition of constant

1 : remaining steady and unchanged a constant temperature
2 : occurring continuously or following one after another constant headaches
3 : always faithful and true constant friends

Other Words from constant

constantly adverb

constant

adjective
con·​stant | \ ˈkän(t)-stənt How to pronounce constant (audio) \

Medical Definition of constant

 (Entry 1 of 2)

: remaining unchanged

Other Words from constant

constantly adverb

constant

noun

Medical Definition of constant (Entry 2 of 2)

: something invariable or unchanging especially : a number that has a fixed value in a given situation or universally or that is characteristic of some substance or instrument

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Comments on constant

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