mut

change

Spelled mut · Latin 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
in- (not), assimilated to im-, + Latin mutabilis (changeable), from mutare (change) + -abilis (able to be)
permutation — one possible arrangement of a set of things
per- (thoroughly) + Latin mutare (change) → permutare (change completely) → permutatio (an exchange or rearrangement)
transmute — transform into a different form or substance
trans- (across, over) + Latin mutare (change) → transmutare (change into another form)
mutable — capable of changing or being changed
Latin mutare (change) + -abilis (able to be) → mutabilis
mutation — a change in form or nature, including a change in inherited traits
Latin mutare (change) + -tio (action or result) → mutatio (a change)
commute — travel regularly between home and work or school; also, replace a penalty with a lighter one
com- (intensive) + Latin mutare (change) → commutare (exchange, alter) → commute

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