Alter and Keep

Opposite meaning words

Alter verb - To make different in some way.

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Keep is an antonym for alter in topics: change, sterilize animal.

Nearby Words: alteration, altering, alterable

Keep verb - To mark with an appropriate practice, rite, or ceremony.

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Alter is an antonym for keep.

Nearby Words: keeping, keeper

mind	alter mind	keep mind
life	alter life	keep life
people	alter people	keep people
balance	alter balance	keep balance
Other words: order, body, control, time, way, face, characters, world, game, story, powers, memories.

Superman does this in the Silver Age comic "Jimmy Olsen, Clark Kent's Pal" to keep Jimmy Olsen, who is temporarily rooming with his alter ego, from discovering his Secret Identity.

Source: Sleeping Dummy
However the Doctor still tries to keep events on track and not interfere with the most important points, while the Monk's intention is to alter events.

Source: Foil / Live-Action TV
The Joes have to save him and the other guests, and he has to keep changing between himself and his alter ego to stay on top of the situation.

Source: Western Animation / G.I. Joe Extreme

Cite this Source

Keep and Alter. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/alter/keep

Alter & Keep. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/alter/keep>.

Keep or Alter. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/alter/keep.

Google Ngram Viewer shows how "alter" and "keep" have occurred on timeline