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

Such a move could fundamentally alter the structure of the solar system and the habitability of Earth. — Jacopo Prisco, CNN Money, 10 July 2026

Everyone experiences the effects of this massage differently; one of the best things here is the flexibility to listen to one’s body's needs and alter the schedule accordingly. — Condé Nast, Condé Nast Traveler, 9 July 2026

The maximum salary cap increase allowed is 10% to prevent large spikes that drastically alter the cap space available to teams overnight, which happened prior to the 2016-17 season. — Lev Akabas, Sportico.com, 9 July 2026

Ullrich said this broader trend will structurally alter the economy and is likely to show up for years in migration patterns and lifetime earnings as much as in survey data. — Catherina Gioino, Fortune, 9 July 2026

Phrases Containing alter

• alter ego