6
briefly(adverb, transiently)
6
momentarily(adverb, transiently)
4
quickly
4
temporarily(adverb, transiently)
3
cursorily(adverb, transiently)
3
evanescently(adverb, transiently)
2
passingly(adverb, transiently)
2
arbitrarily(adverb, capriciously, motivelessly)
2
capriciously(adverb, capriciously, motivelessly)
2
fancifully(adverb, capriciously, motivelessly)
2
flickeringly(adverb, transiently)
2
impulsively(adverb, capriciously, motivelessly)
2
indecisively(adverb, capriciously, motivelessly)
2
randomly(adverb, capriciously, motivelessly)
2
shortly
2
sporadically(adverb, capriciously, motivelessly)
2
suddenly
2
swiftly
2
transiently(adverb, transiently)
2
transitorily(adverb, transiently)
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APASmart Define. (2015). fleetingly thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/fleetingly/thesaurus/synonyms
ChicagoSmart Define. 2015. "fleetingly thesaurus" https://smartdefine.org/fleetingly/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, fleetingly thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/fleetingly/thesaurus/synonyms>.
MLASmart Define. "fleetingly thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/fleetingly/thesaurus/synonyms>