liable or subject to change or alteration.
given to changing; constantly changing; fickle or inconstant: the mutable ways of fortune.

Origin of mutable

1350–1400; Middle English < Latin mūtābilis, equivalent to mūtā(re) to change + -bilis -ble
Related formsmu·ta·bil·i·ty, mu·ta·ble·ness, nounmu·ta·bly, adverbhy·per·mu·ta·bil·i·ty, nounhy·per·mu·ta·ble, adjectivehy·per·mu·ta·ble·ness, nounhy·per·mu·ta·bly, adverbnon·mu·ta·bil·i·ty, nounnon·mut·a·ble, adjectivenon·mut·a·ble·ness, nounnon·mut·a·bly, adverbun·mu·ta·ble, adjective

Synonyms for mutable

Antonyms for mutable

2. stable. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for mutability

Contemporary Examples of mutability

Historical Examples of mutability

  • The question of the mutability of species was thus prominently raised.

  • It is interesting as giving his views on the mutability of species.

  • For Paul, as for all of us, the mutability of human affairs still existed.

    High Noon


  • But, as people have observed before, there is a mutability in human affairs.

    Mr. Midshipman Easy

    Captain Frederick Marryat

  • Addy no longer railed at the impermanence and mutability of things.

    The Creators

    May Sinclair

British Dictionary definitions for mutability



able to or tending to change
astrology of or relating to four of the signs of the zodiac, Gemini, Virgo, Sagittarius, and Pisces, which are associated with the quality of adaptabilityCompare cardinal (def. 9), fixed (def. 10)
Derived Formsmutability or rare mutableness, nounmutably, adverb

Word Origin for mutable

C14: from Latin mūtābilis fickle, from mūtāre to change
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for mutability

late 14c., "tendency to change, inconstancy," from Middle French mutabilité, from Latin mutabilitas, from mutabilis (see mutable).



late 14c., "liable to change," from Latin mutabilis "changeable," from mutare "to change," from PIE root *mei- "to change, go, move" (cf. Sanskrit methati "changes, alternates, joins, meets;" Avestan mitho "perverted, false;" Hittite mutai- "be changed into;" Latin meare "to go, pass," migrare "to move from one place to another;" Old Church Slavonic mite "alternately;" Czech mijim "to go by, pass by," Polish mijać "avoid;" Gothic maidjan "to change"); with derivatives referring to the exchange of goods and services as regulated by custom or law (cf. Latin mutuus "done in exchange," munus "service performed for the community, duty, work").

Online Etymology Dictionary, © 2010 Douglas Harper