variable
The weather is variable in spring, so dress in layers.
The weather changes unpredictably in spring, so wearing multiple layers is advisable.
Likely to change or vary; not consistent or fixed.
Her mood is variable, so it's hard to predict how she'll react.
She often changes her mood unpredictably, making her reactions difficult to anticipate.
Used to describe things that are subject to change, often unpredictably.
Able to be changed or adapted.
The software allows users to set variable speeds for the fan.
The software enables users to adjust the fan's speed to their preference.
Often used in technical or mechanical contexts to describe adjustable settings.
In mathematics and computing, a symbol representing a quantity that can take on different values.
In the equation y = mx + b, x and y are variables.
In the linear equation y = mx + b, x and y represent quantities that can change.
Variables are fundamental in algebra, calculus, and programming.
Collocations
Related Phrases
Pro Tip
Distinguishing 'variable' from 'variant'
Use 'variable' to describe something that changes (e.g., 'variable weather') and 'variant' to describe a slightly different form of something (e.g., 'a variant of the virus').
Gold Rule
When to use 'variable' vs. 'varied'
'Variable' implies the potential for change, while 'varied' describes diversity or a range of different things (e.g., 'a varied diet').
Word Origin
From Latin *variabilis*, meaning 'changeable,' derived from *variare* ('to vary'), which comes from *varius* ('diverse, varied').
Usage Notes
As an adjective, 'variable' describes something that is subject to change. As a noun, it refers to a factor or element that can vary in a system or experiment. Avoid confusing it with 'variant' (a slightly different form) or 'variance' (a measure of difference).