Definition of alter
alterabilityplay \ˌȯl-t(ə-)rə-ˈbi-lə-tē\ noun
alterableplay \ˈȯl-t(ə-)rə-bəl\ adjective
alterablyplay \-blē\ adverb
altererplay \-tər-ər\ noun
Examples of alter in a sentence
Alcohol can alter a person's mood.
He altered his will to leave everything to his sister.
This one small event altered the course of history.
The place has altered in the 10 years since I left.
I'll need to have the dress altered before the wedding.
Origin and Etymology of alter
Middle English, from Medieval Latin alterare, from Latin alter other (of two); akin to Latin alius other — more at else
First Known Use: 14th century
Synonym Discussion of alter
ALTER Defined for English Language Learners
Definition of alter for English Language Learners
: to change (something)
: to make a change to (a piece of clothing) so that it will fit better
: to remove the sex organs of (an animal) so that the animal is unable to reproduce
ALTER Defined for Kids
Definition of alter for Students
: to change partly but not completely … each time he had altered his course. — Walter Farley, The Black Stallion
Medical Definition of alter
: one of the distinct identities or personality states manifested in an individual with multiple personality disorder
Seen and Heard
What made you want to look up alter? Please tell us where you read or heard it (including the quote, if possible).