5
10
4
incognito(adjective, strange, new, unknown, undisclosed)
3
ecstasy
3
tenner
3
decade
3
ten
3
whatchamacallit(noun, adjective, bar, unknown, undisclosed)
2
scratch(noun, verb, remove, mark, draw)
2
tick(noun, line, checkmark)
2
unnamed(adjective, strange, unknown, indefinite, undisclosed)
1
ex
1
10
1
Adam
1
XTC
1
cross(noun, verb, remove, continue, line)
1
disco biscuit
1
go
1
hug drug
1
unknown(adjective, obscure, strange, mysterious, indefinite)
1
anonymous(adjective, strange, choice, unknown, indefinite)
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APASmart Define. (2015). X thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/x/thesaurus/synonyms
ChicagoSmart Define. 2015. "X thesaurus" https://smartdefine.org/x/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, X thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/x/thesaurus/synonyms>.
MLASmart Define. "X thesaurus" 27 October 2015. Web. 20 September 2026. <https://smartdefine.org/x/thesaurus/synonyms>