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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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 the number of new HIV infections has remained relatively constant in recent years, instead of decreasing sharply, and blacks and Latinos are overrepresented in the newly infected. María Méndez, Dallas News, "Dallas County and agencies are ramping up efforts to end the HIV epidemic by 2030. Can it be done?," 23 Aug. 2019 Alton Strupp, Louisville Courier Journal Bankruptcies are a constant threat to coal companies — which is why Kentucky requires those operating for less than five years to post a bond covering a month of payroll. Chris Kenning, The Courier-Journal, "Lawmakers seek to close 'loophole' after coal bankruptcy left miners with bounced checks," 15 Aug. 2019 Hong Kong’s share of total FDI flowing into mainland China has remained fairly constant, at 60%. The Economist, "Hong Kong remains crucially important to mainland China," 8 Aug. 2019 Others have contended the identities and histories of African-American communities are under a seemingly constant threat while police officers do not face similar obstacles. Edward Lee, baltimoresun.com, "Here’s why the Aberdeen IronBirds wear Blue Lives Matter flag on their jerseys," 24 July 2019 On offense, Harutyunyan was a constant threat for the Bulldogs. Jeff Tully, Burbank Leader, "Looking Back: Girls’ cross-country team, track and field standout shine for Burbank in 2018-19," 23 July 2019 The disease has defied efforts to control its spread in the northeastern part of the country, a conflict zone under constant threat from warring militias. Denise Grady, BostonGlobe.com, "Congo’s Ebola Outbreak Is Declared a Global Health Emergency," 17 July 2019 Thankfully, science has provided the perfect alternative for anyone in a constant battle with their alarm clock: the Philips Wake-Up Light Alarm Clock ($90, was $140; amazon.com). Braelyn Wood, Health.com, "You Can Snag This Best-Selling Sunrise Alarm Clock Our Readers Love for Just $89 Today," 15 July 2019 The constant threats have some in immigrant communities living in fear, refusing to answer their doors or phones, while others said Sunday they will not be intimidated into living like prisoners in their own homes. San Diego Union-Tribune, "“Todavía, no tenemos miedo:" resistance replaces fear and anxiety as massive ICE raids fail to materialize," 14 July 2019

Recent Examples on the Web: Noun

For five decades, the Char Bar, briefly known as Monte's Char Bar, has been the neighborhood's lone constant. Robert Wilonsky, Dallas News, "After years of rumors that Char Bar in Dallas is closing, it finally is," 16 Aug. 2019 Since then, scientists have devoted entire careers to refining the rate of that flow, Hubble’s eponymous constant, or H0. Joshua Sokol, Science | AAAS, "Debate intensifies over speed of expanding universe," 19 July 2019 The equal sign shows that energy is equivalent to v, which stands for frequency, by a constant factor—a constant known within the equation as h, and as Planck's Constant to a larger community. David Grossman, Popular Mechanics, "Why the World's Measuring Systems Just Changed—and What It Means," 20 May 2019 The one constant for Team Green has been the steadying influence of coach Kevin Green who has shown a knack of putting together a successful squad. Emmett Hall, sun-sentinel.com, "Team Green shines bright with three-peat performance," 1 Aug. 2019 One constant has been Garcia’s production at the top of the order. Lamond Pope, chicagotribune.com, "Leury Garcia can play almost anywhere on the field for the White Sox, but his production in the leadoff spot has been a constant," 20 July 2019 The one constant in the lives of those women was Anton. oregonlive.com, "From her spot behind the chair, Portland hair stylist bears witness to a changing world for women," 23 June 2019 One constant in the upcoming Apollo 11 commemorations is vintage video and audio of CBS News anchor Walter Cronkite, an overt booster of the space program from the start. Stephen Battaglio, latimes.com, "50 years later, TV is still enamored of the Apollo 11 moonwalk," 21 June 2019 At every scale, from whole forests to clusters of similar trees in a forest to the dynamics in individual trees, the one constant is variation, said Megonigal, at the Smithsonian research center in Maryland. Andrew Revkin, National Geographic, "Trees release flammable methane—here's what that means for climate," 25 Mar. 2019

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

17 Sep 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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