26
soulmate(noun, relation, friendship, amity, camaraderie)
23
close friend(noun, expression, close, intimate, relation)
20
bestie(noun, slang, best, relation, friend)
19
bro(noun, relation, companion, friendship, mate)
15
best buddy(expression, relation, friend, friendship, mate)
14
best bud(expression, relation, friend, friendship, mate)
12
closest friend(expression, relation, friend, friendship, mate)
11
crony(noun, close, intimate, relation, friend)
11
first mate(expression, relation, friend, friendship, mate)
10
soul mate(noun, expression, relation, friend, friendship)
10
hail-fellow(noun, close, intimate, relation, friend)
10
buddy(noun, familiar, intimate, relation, friend)
10
bosom-friend(noun, relation, friendship, mate, amity)
10
friend for life(expression, relation, friend, friendship, mate)
9
number one buddy(expression, relation, friend, friendship, mate)
8
soul sister(expression, relation, friendship, amity, camaraderie)
6
bosom friend(noun, expression, close, relation, companion)
6
bosom pal(noun, expression, relation, friendship, mate)
6
fellow(noun, support, person, close, relation)
6
intimate friend(noun, expression, close, intimate, relation)
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APASmart Define. (2015). best friend thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/best_friend/thesaurus/synonyms
ChicagoSmart Define. 2015. "best friend thesaurus" https://smartdefine.org/best_friend/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, best friend thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/best_friend/thesaurus/synonyms>.
MLASmart Define. "best friend thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/best_friend/thesaurus/synonyms>