Synonyms of alter

alter

verb

ˈȯl-tər 

1

as in to modify

to make different in some way

can't you alter your plans just slightly so we can leave 10 minutes earlier?

Synonyms & Similar Words

• modify
• change
• remodel
• transform
• rework
• revise
• recast
• remake
• refashion
• vary
• redo
• revamp
• deform
• make over
• mutate
• metamorphose
• revolutionize
• transmute
• transfigure
• exchange
• convert
• regenerate
• retool
• commute
• rejigger

Antonyms & Near Antonyms

• set
• fix
• stabilize
• freeze

2

as in to fix

to remove the sex organs of

contends that cats and dogs that have been altered make better pets

Synonyms & Similar Words

• fix
• neuter
• sterilize
• emasculate
• desex
• castrate
• geld
• spay

Synonym Chooser

How is the word alter different from other verbs like it?

Some common synonyms of alter are change, modify, and vary. While all these words mean "to make or become different," alter implies a difference in some particular respect without suggesting loss of identity.

slightly altered the original design

When is it sensible to use change instead of alter?

In some situations, the words change and alter are roughly equivalent. However, change implies making either an essential difference often amounting to a loss of original identity or a substitution of one thing for another.

changed the shirt for a larger size

In what contexts can modify take the place of alter?

The synonyms modify and alter are sometimes interchangeable, but modify suggests a difference that limits, restricts, or adapts to a new purpose.

modified the building for use by the disabled

When might vary be a better fit than alter?

Although the words vary and alter have much in common, vary stresses a breaking away from sameness, duplication, or exact repetition.

vary your daily routine

Example Sentences

Recent Examples of alter

State law requires any political ads created or distributed by committees containing AI-generated or substantially altered images, audio, or video to include a clear and conspicuous disclosure stating that the content has been altered using artificial intelligence. —Richard Sill, Oc Register, 13 Aug. 2025

As the user moves the tip of the pen across a surface while performing a writing exercise, the tip compresses under pressure, altering the orientation and spacing of the magnetic particles. —New Atlas, 12 Aug. 2025

Harbaugh altered the plan after Lance completed 9 of 12 passes for 97 yards and two touchdowns through the first two quarters as the Chargers opened a 21-7 lead. —Elliott Teaford, Oc Register, 31 July 2025

But Gates and Rivers altered the route before the play without any communication. —Daniel Popper, New York Times, 30 July 2025

Phrases Containing alter

• alter ego