35
transitory(adjective, time, continue, limited, brief)
33
temporary(adjective, time, continue, short, brief)
31
short-lived(adjective, time, continue, limited, brief)
31
passing(adjective, time, continue, limited, brief)
30
brief(adjective, short, limited, passing, temporary)
28
transient(adjective, time, continue, limited, impulsive)
26
evanescent(adjective, time, continue, short, limited)
25
fleeting(adjective, time, continue, short, limited)
25
momentary(adjective, time, continue, limited, brief)
23
fugacious(adjective, time, continue, limited, brief)
23
fugitive(noun, adjective, time, continue, limited)
21
impermanent(adjective, limited, brief, passing, temporary)
15
volatile(adjective, limited, changeable, brief, passing)
14
temporal(adjective, time, continue, transient, momentary)
13
short(adjective, present, limited, brief, passing)
11
fly-by-night(adjective, light, weak, unreliable, brief)
9
fading(adjective, brief, transient, transitory, short-lived)
9
flitting(adjective, short, brief, passing, temporary)
9
mortal(adjective, human, transient)
7
changeable(adjective, short, limited, impulsive, unpredictable)
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APASmart Define. (2016). ephemeral thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/ephemeral/thesaurus/synonyms
ChicagoSmart Define. 2016. "ephemeral thesaurus" https://smartdefine.org/ephemeral/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, ephemeral thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/ephemeral/thesaurus/synonyms>.
MLASmart Define. "ephemeral thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/ephemeral/thesaurus/synonyms>