8 entries under informal topic. ×

13
bye(expression, idiom, farewell, interjection)
12
bye-bye(expression, idiom, farewell, noun)
5
see you(expression, farewell, idiom, parting)
4
Ciao(expression, idiom, farewell, noun)
4
catch you later(expression, farewell, idiom, parting)
2
ta ta(expression, idiom, farewell)
2
toodeloo(expression, idiom, farewell)
1
tatty bye
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APASmart Define. (2016). so long thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/so_long/thesaurus/synonyms
ChicagoSmart Define. 2016. "so long thesaurus" https://smartdefine.org/so_long/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, so long thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/so_long/thesaurus/synonyms>.
MLASmart Define. "so long thesaurus" 30 March 2016. Web. 23 September 2026. <https://smartdefine.org/so_long/thesaurus/synonyms>