To make some change in; make different in some particular; cause to vary in some degree, without an entire change.
To change entirely or materially; convert into another form or state: as, to alter a cloak into a coat; to alter an opinion.
To castrate, emasculate, or spay, as an animal.
To exchange.
To agitate: as, ”altered and moved inwardly,” Milton, Areopagitica, p. 1.
To become different in some respect; vary; change.