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variable

UK[ˈvɛə.ɹi.ə.bl̩]US[ˈvæɹ.i.ə.bl̩]
adjectiveB24 meaningsOccasional — familiar, but not everyday · #9,388 of 15,258mostly written

Other forms: variables

Something variable changes, and you cannot count on which way it will go. A variable wind that swings from north to west and back again. Variable weather. A variable rate on a loan, four per cent this month and something else by April.

In science and in maths the word is a noun: a variable is the thing in an experiment you are allowed to change, or the letter standing in for a number nobody has worked out yet. Programmers use it the same way — a variable is a named box, and you can swap what is in the box whenever you like. Keep the two jobs apart, because as an adjective it is a warning: of variable quality is a polite way of saying that some of it was bad. It sits happily after highly and extremely, and the word you will most often see standing opposite it is fixed — a fixed rate or a variable one.

Definitions of variable

  1. 1adjectivechangeableChanging, or able to change.B2~40%

    “The wind was light and variable all afternoon.”

    synonyms: changeable, shifting

  2. 2nounvariableSomething in an experiment or a situation that can change and be measured.B2+~15%

    “They changed one variable at a time and wrote down the result.”

  3. 3nounmathsIn maths and computing, a name or symbol holding a value that can change.C1~43%

    “Give the variable a name you will still recognise next year.”

  4. 4adjectiveconsistentNot consistent — good on some occasions and poor on others.C1~2%

    “The food was cheap and of variable quality.”

Shares are an estimate: a language model read 179 sentences found in the wild and placed 178 of them on a sense (1 were unclear) — a count of our sample, not a measurement of English.

variable is a factor that can change.

Remember it

VARI-able → a FAIRY

A fairy the size of a spoon sits on the kitchen table, tapping the fruit bowl with her stick. Tap — the apple is a pear. Tap — the pear is a lemon. She keeps tapping, and every fruit on the table takes a turn at being every other one.

hooks ontofairy

Where it comes from

It came into English in the fourteenth century from Old French, and it is vary plus able — a thing able to vary. Behind that is Latin variare, to change, built on varius, meaning different or various. The Latin says it and the English says it again, seven hundred years later, in almost the same letters.

  1. Latin

    variare — to change

  2. Old French

    variable

  3. English, today

    variable

Built from

  • varius · Latin — different, various

Borrowed into Middle English - in the 14th century from Old French variable, from Latin variare (“to change”), from varius (“different, various”). Equates to English vary + able.

Etymology from Wiktionary, CC BY-SA

Practised in Science & Space, Academic English, Computing & Code

Practise this word

variable in the wild

  • Probability distributions are closely linked to random variables.

    Probability distribution

  • For example, the result of a coin toss can be represented by a random variable X that equals 1 for heads and 0 for tails.

    Probability distribution

  • Typically, the range of a random variable is a subset of the real numbers.

    Random variable

  • Sometimes a random variable is taken to be automatically valued in the real numbers, with more general random quantities instead being called random elements.

    Random variable

  • The first documented periodic variable was the eclipsing binary Algol.

    Variable star

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From Wikipedia, CC BY-SA 4.0. These sentences were written by other people about their own subjects; they are here to show the word at work, not as anybody’s opinion.

Related words

the varius family

various

variable — used about once every 4,394 pages · #9,388 · point at the bar for the others