115 entries under noun topic. ×

4
partner(associate, companion, friend, ally)
3
acquaintance(associate, companion, friend, contemporary)
3
brother(friend, sister)
3
doppelganger(informal, personality, companion, counterpart)
3
equivalent
3
likeness(match, equivalent)
3
shadow
3
stand-in(double, clone, look-alike)
2
bosom friend(expression, friend, buddy, bud)
2
cohort(associate, companion, friend, contemporary)
2
compeer(match, companion, friend, contemporary)
2
complement(match, companion, friend, contemporary)
2
coordinate(companion, friend, contemporary, acquaintance)
2
friend(expression, person, affection, relationship)
2
image(clone, look-alike)
2
kindred spirit(expression, friend, buddy, bud)
2
like(match, equivalent)
2
lover(friend, buddy, bud, confidante)
2
other self
2
parallel(match, equivalent)
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APASmart Define. (2015). alter ego thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/alter_ego/thesaurus/synonyms
ChicagoSmart Define. 2015. "alter ego thesaurus" https://smartdefine.org/alter_ego/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, alter ego thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/alter_ego/thesaurus/synonyms>.
MLASmart Define. "alter ego thesaurus" 14 April 2015. Web. 30 September 2026. <https://smartdefine.org/alter_ego/thesaurus/synonyms>