You use constant to describe something that happens all the time or is always there.
Inflation is a constant threat.
He has been her constant companion for the last four months.
constantlyadverb [usually ADVERB with verb]
The direction of the wind is constantly changing.
We are constantly being reminded to cut down our fat intake.
Synonyms: continuously, always, all the time, invariably More Synonyms of constant
2. adjective
If an amount or level is constant, it stays the same over a particular period of time.
The average speed of the winds remained constant.
3. countable noun
A constant is a thing or value that always stays the same.
In the world of fashion it sometimes seems that the only constant is ceaseless change.
Two significant constants have been found in a number of research studies.
More Synonyms of constant
constant in British English
(ˈkɒnstənt)
adjective
1.
fixed and invariable; unchanging
2.
continual or continuous; incessant
constant interruptions
3.
resolute in mind, purpose, or affection; loyal
noun
4.
something that is permanent or unchanging
5.
a specific quantity that is always invariable
the velocity of light is a constant
6.
a. mathematics
a symbol representing an unspecified number that remains invariable throughout a particular series of operations
b. physics
a theoretical or experimental quantity or property that is considered invariable throughout a particular seriesof calculations or experiments
7. logical constant
Derived forms
constantly (ˈconstantly)
adverb
Word origin
C14: from Old French, from Latin constāns standing firm, from constāre to be steadfast, from stāre to stand
Constant in British English
(French kɔ̃stɑ̃)
noun
Benjamin (bɛ̃ʒamɛ̃). real name Henri Benjamin Constant de Rebecque. 1767–1830, French writer and politician: author of the psychological novel Adolphe (1816)
Constant in American English
(kɔ̃̃ˈstɑ̃)
Benjamin(Henri Benjamin Constant de Rebecque) 1767-1830; Fr. writer & politician, born in Switzerland
constant in American English
(ˈkɑnstənt)
adjective
1.
not changing; remaining the same
; specif.,
a.
remaining firm in purpose; resolute
b.
remaining steady in affections or loyalties; faithful
c.
remaining free from variation or change; regular; stable
2.
going on all the time; continual; persistent
constant interruptions
noun
3.
anything that does not change or vary
4. Ancient Mathematics and Physics
a.
a quantity that always has the same value
: in full absolute constant
b.
a quantity, vector, etc. assumed to have one value throughout a particular discussion or investigation
: in full arbitrary constant
see also variable
SIMILAR WORDS: conˈtinual, ˈfaithful
Derived forms
constantly (ˈconstantly)
adverb
Word origin
ME & OFr constaunt < L constans: see constancy
Examples of 'constant' in a sentence
constant
Your life is a constant juggling act between work and family.
Christianity Today (2000)
But it is not easy when you are in constant pain.
Times, Sunday Times (2009)
We were also subjected to a constant stream of what would today be called physical abuse.
Times, Sunday Times (2008)
This constant thanking wastes time and makes listening to proceedings a misery.
Times, Sunday Times (2010)
Two months of constant parenting without any food are quite another.
Times, Sunday Times (2010)
Yet some ghostly things have remained constant for centuries.
Times, Sunday Times (2012)
Viewing figures for the quarterfinals over the last three years have remained relatively constant.
Times, Sunday Times (2009)
He is in constant contact with his family but he has been very strong over it.
Times, Sunday Times (2015)
Industrial action is an almost constant threat.
Times, Sunday Times (2008)
This fan has been my constant companion.
Times, Sunday Times (2013)
Those of us who have greasy skin face a constant battle against shine and spots.
The Sun (2009)
You always have energy to burn and the constant rushing around keeps you wired and buzzing.
The Sun (2016)
One more constant in life is gone.
Times, Sunday Times (2013)
Today there is a constant stream of visitors.
Times, Sunday Times (2012)
Commanding display by a fullback under constant pressure.
The Sun (2012)
Two months of constant parenting are one thing.
Times, Sunday Times (2010)
The ginger singer is seeing the fruits of his labour gush through following two years of constant touring and writing music.
The Sun (2015)
It is a world in constant motion, which seeks to oppose anything which resists it.
Crowley, Vivianne Phoenix From the Flame (1994)
We were flitting in and out of scenes, but he was the constant the entire time.
The Sun (2015)
Well, after two weeks of constant use they must have been quite overpowering.
Times, Sunday Times (2015)
That brought a 14 per cent improvement in sales at a constant currency basis and a doubling of profits.
Times, Sunday Times (2007)
At constant currency, sales grew 7% last year.
Times, Sunday Times (2016)
In other languages
constant
British English: constant /ˈkɒnstənt/ ADJECTIVE
Something that is constant happens all the time or is always there.
...constant interruptions.
American English: constant
Arabic: مُسْتَمِرّ
Brazilian Portuguese: constante
Chinese: 不断的
Croatian: stalan
Czech: neustálý
Danish: konstant
Dutch: constant
European Spanish: constante
Finnish: jatkuva
French: constant
German: ständig
Greek: συνεχής
Italian: costante
Japanese: 絶えず続く
Korean: 연속적인
Norwegian: vedvarende
Polish: stały ciągły
European Portuguese: constante
Romanian: constant
Russian: постоянный
Latin American Spanish: constante
Swedish: konstant
Thai: ที่เกิดขึ้นตลอดเวลา
Turkish: sabit değişmez
Ukrainian: постійний
Vietnamese: liên tục
All related terms of 'constant'
constant use
Your use of something is the action or fact of your using it.
gas constant
the constant in the gas equation . It is equal to 8.31472 joules per kelvin per mole
heat constant
a quantity that is considered invariable throughout a series of calculations relating to the heat of bodies
time constant
the time required for the current or voltage in a circuit to rise or fall exponentially through approximately 63 per cent of its amplitude
constant danger
Danger is the possibility that someone may be harmed or killed.
constant dollar
a dollar valued according to its purchasing power in an arbitrarily set year and then adjusted for price changes in other years so that real purchasing power can be compared by giving prices as they would presumably be in the base year
constant motion
Motion is the activity or process of continually changing position or moving from one place to another.
constant noise
Noise is a loud or unpleasant sound.
constant review
A review of a situation or system is its formal examination by people in authority. This is usually done in order to see whether it can be improved or corrected .
constant source
The source of something is the person, place, or thing which you get it from.
constant theme
A theme in a piece of writing, a talk, or a discussion is an important idea or subject that runs through it.
Dirac constant
a constant used in quantum mechanics , equal to the Planck constant divided by 2π. It has a value of 1.054571596±0.000000078 × 10 –34 joule seconds
Hubble constant
the rate at which the expansion velocity of the universe depends on distance away. It is currently estimated to lie in the range 60–80 km s –1 megaparsec –1
Planck constant
a fundamental constant equal to the energy of any quantum of radiation divided by its frequency . It has a value of 6.62606876 × 10 –34 joule seconds
solar constant
the rate at which the sun's energy is received per unit area at the top of the earth's atmosphere when the sun is at its mean distance from the earth and atmospheric absorption has been corrected for. Its value is 1367 watts per square metre
Avogadro constant
the number of atoms or molecules in a mole of a substance
Boltzmann constant
the ratio of the gas constant to the Avogadro constant, equal to 1.380 650 × 10 –23 joule per kelvin
constant challenge
A challenge is something new and difficult which requires great effort and determination .
constant criticism
Criticism is the action of expressing disapproval of something or someone. A criticism is a statement that expresses disapproval.
constant dialogue
Dialogue is communication or discussion between people or groups of people such as governments or political parties.
constant reminder
Something that serves as a reminder of another thing makes you think about the other thing.
constant scrutiny
If a person or thing is under scrutiny , they are being studied or observed very carefully.
constant struggle
A struggle is a long and difficult attempt to achieve something such as freedom or political rights.
electric constant
the permittivity of free space, which has the value 8.854 187 × 10 –12 farad per metre
Hubble's constant
the ratio of the recessional velocity of galaxies to their distance from the sun, with current measurements of its value ranging from 50 to 100 km/ sec per megaparsec
logical constant
one of the connectives of a given system of formal logic , esp those of the sentential calculus , not, and, or, and if … then …
magnetic constant
the permeability of free space, which has the value 4π × 10 –7 henry per metre
Planck's constant
a universal constant ( h ) which gives the ratio of a quantum of radiant energy ( E ) to the frequency (ν) of its source: it is expressed by the equation E = h ν, and its approximate numerical value is 6.626 × 10 -34 joule second
thermal constant
a quantity that is considered invariable throughout a series of calculations relating to the heat of bodies
Avogadro's constant
the number of atoms or molecules in a mole of a substance, equal to 6.022 52 × 10 23
constant reassurance
If someone needs reassurance , they are very worried and need someone to help them stop worrying by saying kind or helpful things.
constant temperature
The temperature of something is a measure of how hot or cold it is.
cosmological constant
a term introduced by Einstein into his field equations of general relativity to permit a stationary , nonexpanding universe : it has since been abandoned in most models of the universe
dielectric constant
the ratio of the capacitance of a capacitor in which a particular insulating material is the dielectric , to its capacitance in which a vacuum is the dielectric
equilibrium constant
The equilibrium constant is the ratio between the amount of reactants and the amount of product for a particular chemical reaction , used to calculate chemical behavior.
fundamental constant
a physical constant , such as the gravitational constant or speed of light, that plays a fundamental role in physics and chemistry and usually has an accurately known value
gravitational constant
the factor relating force to mass and distance in Newton's law of gravitation . It is a universal constant with the value 6.673 × 10 –11 N m 2 kg –2
constant mesh gearbox
A constant mesh gearbox is a type of transmission in which all forward gear pairs remain engaged.
constant velocity joint
A constant velocity joint is a universal joint in which the output shaft rotates at constant speed if the input shaft speed is constant.
universal gas constant
the constant in the gas equation . It is equal to 8.31472 joules per kelvin per mole
Faraday
Michael . 1791–1867, English physicist and chemist who discovered electromagnetic induction , leading to the invention of the dynamo . He also carried out research into the principles of electrolysis
diffusion coefficient
the rate at which a diffusing substance is transported between opposite faces of a unit cube of a system when there is unit concentration difference between them
multiplication factor
the ratio of the number of neutrons in a generation to the number of neutrons in the previous generation: when the multiplication factor is equal to or greater than one, a chain reaction is possible