Hypermutability

[myoo-tuh-buh l] /ˈmyu tə bəl/

adjective
1.
liable or subject to change or alteration.
2.
given to changing; constantly changing; fickle or inconstant:
the mutable ways of fortune.
/ˈmjuːtəbəl/
adjective
1.
able to or tending to change
2.
(astrology) of or relating to four of the signs of the zodiac, Gemini, Virgo, Sagittarius, and Pisces, which are associated with the quality of adaptability Compare cardinal (sense 9), fixed (sense 10)
adj.

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”).