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

Even if the relationship isn’t fake, something about Bronwyn’s newfound fame (or, rather, adjacency to fame by way of Lisa Barlow) may have altered her brain chemistry into thinking this is a normal way to navigate and present a new relationship. — Tom Smyth, Vulture, 24 Sep. 2026

Nicotine dependence alters brain chemistry by stimulating neurotransmitters like dopamine that govern mood and pleasure, according to Cleveland Clinic. — Khloe Quill, FOXNews.com, 24 Sep. 2026

Critics of the overhaul say the new policies will alter the mission of the anti-poverty, early learning program to provide high-quality services that prepare young children for school. — Kate Sequeira, Los Angeles Times, 24 Sep. 2026

Not everyone accepted that the earnings outlook was about to be permanently altered. — Josh Brown,sean Russo, CNBC, 24 Sep. 2026

Phrases Containing alter

• alter ego