early 14c., "one who alters the form of anything," agent noun from change (v.), or else from Old French changeour "money-changer, barterer," from changier. Meaning "money-changer" in English is from mid-14c. Meaning "mechanism for automatically changing records on a record-player" is from 1930.
an inveterate changer of the menu
changeable
changeful
changeless
changeling
change-over
changer
changing
channel
chanson
chant
chanter