WordGarden.iomutable
B2Pronunciation
UK
- /mjˈuːtəbəl/
US
- /ˈmjutəbəl/
Meanings
Adjective
able to change; not fixed or constant
able to be changed after creation or assignment in a program
Beyond the definition
Imagine clay - you can shape it into one form, then press it into another. That is the idea behind mutable. Something mutable is not fixed; it can change or be changed. This word often appears in computer programming, where mutable data can be changed after it is created. But it is useful in everyday life too. A person's mood can be mutable, moving from cheerful to quiet in a short time. Political alliances can also be mutable, changing as power shifts.
Think of a chameleon changing colors - that is a vivid example of something mutable. If you are writing code and need to make sure data does not change by accident, you might avoid mutable objects. In life, though, this kind of change can also suggest the ability to adjust and respond to new situations.
The word mutable describes something that is subject to change or alteration. It comes from the Latin root mutare, meaning "to change." Unlike things that are fixed, permanent, or immutable, mutable objects or concepts are flexible and can be modified.
You'll often encounter "mutable" in the world of computer science. In programming languages like Python or JavaScript, data types are categorized as either mutable (changeable) or immutable (unchangeable). Mutable lists or objects, for example, allow you to add, remove, or modify elements after they've been created. Immutable strings, on the other hand, cannot be altered once defined. This distinction is crucial for understanding how programs behave and for managing data effectively.
However, mutable isn't limited to code! It can describe anything capable of being changed. A person's opinions are often mutable—they evolve over time with new experiences and information. The weather is famously mutable, shifting from sunshine to rain in a matter of hours. Even the landscape itself is mutable, slowly shaped by erosion and geological forces over eons.
Consider these examples: "The artist created a mutable sculpture using sand, knowing it would eventually be washed away by the tide." Or, "Her plans for the future were mutable; she remained open to new opportunities as they arose."
So, while mutable has a specific technical meaning in certain fields, at its heart, it simply describes the quality of being capable of change—a quality that defines much of the world around us.
Examples
- 1
Scheduling
The schedule is still mutable, so we can move the meeting if we need to.
- 2
Project management
In this project, the deadline is mutable, but the budget is fixed.
- 3
Programming data
In Python, lists are mutable, but tuples are not.
- Domain
In programming, mutable is often used with data, object, list, and state.
- 4
Program state
The bug came from sharing mutable state between two parts of the app.
- Domainmutable state
information in a program that can change while the program is running
More examplesFewer examples
- 5
Figurative memory
The novel treats memory as something mutable, shaped by fear, age, and regret.
See also
Similar
- changeable
- variable
- alterable
Shades of meaning
Contrast
Used with (collocations)
- mutable data
- mutable object
- mutable state
- mutable nature
Word family
- mutability
- mutably
Explore
- state
- changeability
Forms and spellings
1 form open this card.
Main spelling
- mutableadjective