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1 entry under informal topic. ×

17
sleep tight(expression, slang, wish, interjection)
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APASmart Define. (1970). nighty-night thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/nighty-night/thesaurus/synonyms
ChicagoSmart Define. 1970. "nighty-night thesaurus" https://smartdefine.org/nighty-night/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 1970, nighty-night thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/nighty-night/thesaurus/synonyms>.
MLASmart Define. "nighty-night thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/nighty-night/thesaurus/synonyms>