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

The irony is not lost on Steele that what began as a passion project has, in some ways, altered his passion. — Dana O’Neil, CNN Money, 21 Aug. 2026

Bellevue schools spokeswoman Amanda Oliver said the district has a great relationship with Bellevue police and doesn’t see a need to alter anything. — Julia Ainsley, NBC news, 21 Aug. 2026

El Niño occurs when changes in Pacific Ocean wind conditions release heat stored in the ocean into the atmosphere, altering global weather patterns and sparking floods, droughts, and heat waves. — Lucy Siers, Footwear News, 21 Aug. 2026

But what completely alters Toronto’s trajectory and keeps the Maple Leafs in the upper echelon is the arrival of Gavin McKenna. — Corey Pronman, New York Times, 21 Aug. 2026

Phrases Containing alter

• alter ego