4
identic(adjective, like, exact, spare, equal)
4
ingeminate
4
join(verb, make, combine, mate, pair)
4
limb
4
opposite number(noun, expression, idiom, like, copy)
4
pair
4
reduplicate
4
repeat
4
replicate
4
spit and image(noun, expression, idiom, like, copy)
4
tally(noun, like, copy, equal, equivalent)
4
twins(noun, sign, constellation, astrology)
4
two-sided(adjective, double, duplication)
4
very same(expression, adjective, idiom, like, exact)
3
resembling(adjective, close, like, equal, near)
3
accessory
3
alikeness(noun, similarity)
3
all the same(expression, idiom)
3
associate(noun, verb, companion, friend, contemporary)
3
attendant
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APASmart Define. (2015). twin thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/twin/thesaurus/synonyms
ChicagoSmart Define. 2015. "twin thesaurus" https://smartdefine.org/twin/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, twin thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/twin/thesaurus/synonyms>.
MLASmart Define. "twin thesaurus" 23 December 2015. Web. 24 September 2026. <https://smartdefine.org/twin/thesaurus/synonyms>