5
expiring(verb, adjective, dying)
5
expiry(noun, finish, loss, death, decease)
5
fickle(adjective, transient)
5
flowing(verb, adjective, moving)
5
flying(brief, transitory, short-lived, transientness)
5
hurried(adjective, slight, detail, silly, casual)
5
instantaneous(adjective, transient, transientness)
5
leaving(noun, departure)
5
mutable(adjective, transient)
5
pro tem(adjective, temporary)
5
running(verb, adjective, moving)
5
speedy(adjective, casual, quick, hasty, superficial)
4
conversion(noun, move, movement, change, travel)
4
fleet(adjective, time, continue, quick, speedy)
4
inconstant
4
interim
4
legislation(authorization, ratification, enactment)
4
limited
4
makeshift
4
perishable(adjective, present, short, limited, brief)
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APASmart Define. (2016). passing thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/passing/thesaurus/synonyms
ChicagoSmart Define. 2016. "passing thesaurus" https://smartdefine.org/passing/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, passing thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/passing/thesaurus/synonyms>.
MLASmart Define. "passing thesaurus" 26 February 2016. Web. 20 September 2026. <https://smartdefine.org/passing/thesaurus/synonyms>