mut

change

Spelled mut · mutare 'change, exchange'

Latin mutare meant 'change': mutation changes a form, transmute changes a substance, and commute once broadly meant exchanging one thing for another.

Words built from it

immutable — unable to be changed
im- (not; form of in-) + mut (change) + -able (able to be)
permutation — one possible arrangement of a set of things
per- (thoroughly) + mut (change) + -ation (action or result)
transmute — transform into a different form or substance
trans- (across) + mut (change)
mutable — capable of changing or being changed
mut (change) + -able (able to be)
mutation — a change in form or nature, including a change in inherited traits
mut (change) + -ation (action or result)
commute — travel regularly between home and work or school; also, replace a penalty with a lighter one
com- (intensively) + mut (change)

mutiny — From French mutin (rebellious), ultimately related to Latin movere (move), not mutare (change).