What does “mutable” mean?

mutable


Oh, this is a good one —

"Mutable" means something that can change or is able to be changed. It's the opposite of "fixed" or "permanent."

You'd mostly see it in more formal writing or in tech/coding contexts. Like, a programmer might say "this variable is mutable" — meaning its value can be changed later in the code. Or someone might write "her feelings were mutable," meaning her feelings kept shifting and changing over time.

You could also hear it in a sentence like "the rules of the game are mutable — we can adjust them if needed." So it's saying the rules aren't locked in stone.

Basically, if something is mutable, it's flexible and open to change — nothing about it is set forever.

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