constant

adjective
con·​stant | \ˈkän(t)-stənt \

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

And then there is the constant threat of the internet. Rachel Sugar, Vox, "With a superbarket, shopping isn’t a chore; it’s an experience.," 30 Nov. 2018 The vast majority of those people never interact with my stories, leaving me with a constant impression that I’m just being creeped on. Casey Newton, The Verge, "Instagram adds ‘close friends’ to let you share stories to a more limited group," 30 Nov. 2018 After spending a few years away from the public eye—and under nearly constant speculation from the internet, the media, and fans—Amanda Bynes has returned to the spotlight to tell her own story. Sarah Jacoby, SELF, "Amanda Bynes Says Her Drug Use Made Her a 'Completely Different Person'," 27 Nov. 2018 To workers flanked by the constant banter of their colleagues’ business dealings and personal dramas, the booths represent their best hope for any semblance of privacy. ... Sarah E. Needleman, WSJ, "The Best Spot in the Office Is a Phone Booth—If You Can Get Into One," 27 Nov. 2018 Give them gifts that allow them to come back down to reality and live in the present moment, such as a plant to take care of, watercolor painting supplies, or a book to overcome their constant anxiety. Alice Bell, Vogue, "The Best Gifts for Every Astrological Sign on Your List," 26 Nov. 2018 The frame rate struggled to keep constant though, and in certain demos turning my head side-to-side resulted in flickering black areas as the headset rushed to draw in the missing information. Hayden Dingman, PCWorld, "HTC Vive Focus hands-on impressions: No-PC, no-wires VR at a too-steep price," 9 Nov. 2018 These global sites allow NASA to remain in constant communication with spacecraft through radio waves picked up by antenna. David Grossman, Popular Mechanics, "NASA Probe Gets Closer to Sun Than Any Human-Made Object in History," 30 Oct. 2018 It's symbolized by two fish swimming in opposite directions, representing the constant division of Pisces's attention between fantasy and reality. Aliza Kelly Faragher, Allure, "Each Zodiac Sign's Unique Personality Traits, Explained by an Astrologer," 28 Oct. 2018

Recent Examples on the Web: Noun

Like the speed of light, the Planck constant is a universal truth that will never change. Brian Resnick, Vox, "The world is about to redefine the kilogram," 15 Nov. 2018 For two decades, Billy Beane has reigned as the A’s mastermind, the team’s one real constant. Susan Slusser, SFChronicle.com, "Could A’s changing times signal end to Billy Beane era?," 18 June 2018 The one constant has been Cleveland's LeBron James, who at age 33 has again found another gear in the playoffs despite the different pieces surrounding him. Kyle Hightower, chicagotribune.com, "Cavs, Celtics ready for Eastern Conference finals rematch," 12 May 2018 The only constant has been the losing, and little about the club’s recent history has prepared its fan base for such misery. Jonas Shaffer, baltimoresun.com, "'I'm afraid to turn on the Orioles tonight': Bleak start tests the patience of Birds diehards," 8 May 2018 This is the most stable and consistent clock in the world and will help scientists studying the fundamental constants of the universe. Avery Thompson, Popular Mechanics, "Here Is the World's Most Stable Atomic Clock," 28 Nov. 2016 Injuries and personnel changes have been the norm for Kentucky this season, but Wenyen Gabriel is a constant on the floor down the stretch to close out games. Fletcher Page, The Courier-Journal, "3 questions facing Kentucky basketball going into Tuesday's matchup at South Carolina," 15 Jan. 2018 The rebounding and defensive tenacity have been constants. Barry Jackson, miamiherald, "Mixed offensive results for Bam Adebayo in summer league," 10 July 2018 And Suns owner Robert Sarver has been the one constant through an unprecedented stretch of futility for an organization that had become accustomed to success. Greg Moore, azcentral, "Moore: NBA draft night shows Phoenix Suns moving in new direction," 21 June 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

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

Noun

see constant entry 1

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Statistics for constant

Last Updated

3 Dec 2018

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

: always loyal

constant

noun

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

: something that stays the same : something that does not change

: a quantity or number whose value does not change

constant

adjective
con·​stant | \ˈkän-stənt \

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 \

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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