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Synonyms of exo-

3 similar words · 8 opposite words

Another word for exo- is ex-. Other synonyms of exo- are ecto- and out-. The opposite of exo- is end-.

Synonyms and similar words for exo-

prefixOutside.

out-
ex-Outside.
ecto-Outside.

Opposite of exo-

prefixAntonym(s) of “outside”.

in-
intra-
en-
em-The form taken by en- before the labial consonants b and p, as it assimilates place of articulation.
im-Expressing negation; not.
end-Internal, within, inside, into.
endo-
ento-Synonym of end-.

Meaning of exo-

prefix Outside; external.
prefix Extrasolar; beyond the Solar System (our solar system).

Full definition of exo-

Questions about synonyms of exo-

What is another word for exo-?: Exo- has 3 synonyms on Word.ws, such as ex-, ecto- and out-.
What is the opposite of exo-?: The opposite of exo- is end-. Other antonyms of exo- are im-, em-, in- and en-.
What does exo- mean?: Exo- means outside; external.

Adapted from Wiktionary: exo- (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Cite this page: “Synonyms of exo-.” Word.ws, https://word.ws/synonyms/exo-. Based on Wiktionary, CC BY-SA 4.0.