UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈmjuːtəbəl/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/ˈmjutəbəl/ ,USA pronunciation: respelling(myo̅o̅tə bəl)

WordReference Random House Learner's Dictionary of American English © 2020
mu•ta•ble /ˈmyutəbəl/USA pronunciation   adj. 
  1. allowing change:mutable laws of nature.
  2. likely to change:the mutable ways of fortune.
mu•ta•bil•i•ty /ˌmyutəˈbɪlɪti/USA pronunciation  n. [uncountable]
mu•ta•bly, adv. See -mut-.

WordReference Random House Unabridged Dictionary of American English © 2020
mu•ta•ble  (myo̅o̅tə bəl),USA pronunciation adj. 
  1. liable or subject to change or alteration.
  2. given to changing;
    constantly changing;
    fickle or inconstant:the mutable ways of fortune.
mu′ta•bili•ty, muta•ble•ness, n. 
muta•bly, adv. 
  • Latin mūtābilis, equivalent. to mūtā(re) to change + -bilis -ble
  • Middle English 1350–1400
    • 1.See corresponding entry in Unabridged changeable, variable.
    • 2.See corresponding entry in Unabridged unstable, vacillating, unsettled, wavering, unsteady.
    • 2.See corresponding entry in Unabridged stable.

Collins Concise English Dictionary © HarperCollins Publishers::
mutable /ˈmjuːtəbəl/ adj
  1. able to or tending to change
Etymology: 14th Century: from Latin mūtābilis fickle, from mūtāre to change

ˌmutaˈbility, rare ˈmutableness n ˈmutably adv
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