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

For many, the light sentences marked a shocking and meager ending to the life-altering tragedy witnessed by thousands. —Kacen Bayless, Kansas City Star, 8 May 2026

But if our test cars are any indication of what’s possible during the ordering process, these accent colors can be altered or removed as would-be owners see fit. —Bradley Iger, Robb Report, 8 May 2026

The high court's decision altered a decades-old understanding of the law, giving Republicans grounds to try to eliminate majority-Black districts that have elected Democrats. —Arkansas Online, 8 May 2026

These cross-links alter the DNA double helix, interfering with essential processes such as DNA replication and transcription (the synthesis of RNA from DNA). —Encyclopedia Britannica, 8 May 2026

Phrases Containing alter

• alter ego