| Main Entry: | momentary |
| Part of Speech: | adjective |
| Definition: | brief, fleeting |
Synonyms: |
cursory, dreamlike, ephemeral, evanescent, flashing, flitting, flying, fugacious, fugitive, gone in flash, hasty, impermanent, impulsive, in wink of an eye, instantaneous, like lightning, passing, quick, shifting, short, short-lived, spasmodic, summary, temporary, transient, transitory, vanishing, volatile |
| Notes: | momentary means fleeting, brief; momentous means significant and having great consequence |
Antonyms: |
lasting, long-lasting, permanent, staying |
| Main Entry: | brief |
| Part of Speech: | adjective |
| Definition: | short in time |
Synonyms: |
concise, curtailed, ephemeral, fast, fleeting, hasty, instantaneous, little, meteoric, momentary, passing, quick, short-lived, short-term, swift, temporary, transient, transitory |
Antonyms: |
enduring, lasting, lengthy, long, long-lived |
| Main Entry: | evanescent |
| Part of Speech: | adjective |
| Definition: | transient |
Synonyms: |
brief, disappearing, fading, fleeting, momentary, passing, short-lived, temporary, tenuous, vanishing |
| Main Entry: | experimental |
| Part of Speech: | adjective |
| Definition: | exploratory |
Synonyms: |
beginning, developmental, empirical, experiential, first stage, laboratory, momentary, on approval, pilot, preliminary, preparatory, primary, probationary, provisional, speculative, temporary, tentative, test, trial, trial-and-error, unconcluded, under probation, unproved |
Antonyms: |
proven, tested, tried |
| Main Entry: | fleeting |
| Part of Speech: | adjective |
| Definition: | brief, transient |
Synonyms: |
cursory, ephemeral, evanescent, fading, flash in the pan, flitting, flying, fugacious, fugitive, impermanent, meteoric, momentary, passing, short, short-lived, sudden, temporary, transitory, vanishing, volatile |
Antonyms: |
constant, continual, endless, enduring, lasting, lengthy, long, long-lived, permanent, perpetual |
| Main Entry: | fly-by-night |
| Part of Speech: | adjective |
| Definition: | unreliable and shady |
Synonyms: |
brief, cowboy, disreputable, dubious, ephemeral, evanescent, fleeting, here-today-gone-tomorrow, impermanent, irresponsible, momentary, not to be relied upon, not to be trusted, passing, questionable, shady, shifty, short-lived, slimy*, slippery*, temporary, treacherous, trustless, undependable, unprofessional, unreliable, unsure, untrustworthy |
Antonyms: |
dependable, reliable, reputable, responsible, trustworthy |
| Main Entry: | fugitive |
| Part of Speech: | adjective |
| Definition: | fleeing, transient |
Synonyms: |
avoiding, brief, criminal, elusive, ephemeral, errant, erratic, escaping, evading, evanescent, fleeting, flitting, flying*, fugacious, hot*, impermanent, lamster, momentary, moving, on the lam, passing, planetary, running away, short*, short-lived, temporary, transitory, unstable, volatile, wandering, wanted |
Antonyms: |
confronting, facing, permanent |
| Main Entry: | imperceptible |
| Part of Speech: | adjective |
| Definition: | hard to sense; faint |
Synonyms: |
ephemeral, evanescent, fine, gradual, impalpable, imponderable, inappreciable, inaudible, inconsiderable, inconspicuous, indiscernible, indistinct, indistinguishable, infinitesimal, insensible, insignificant, invisible, microscopic, minute, momentary, shadowy, slight, small, subtle, tiny, trivial, undetectable, unnoticeable, vague |
Antonyms: |
apparent, conspicuous, distinct, evident, noticeable, obvious, perceptible, seeable, striking, unobscured |
| Main Entry: | instantaneous |
| Part of Speech: | adjective |
| Definition: | immediate |
Synonyms: |
direct, fast, hair-trigger, in a flash, instant, momentary, quick, rapid, spontaneous, transitory |
Antonyms: |
delayed, eventual, late, later |
| Main Entry: | meteoric |
| Part of Speech: | adjective |
| Definition: | brief, sudden |
Synonyms: |
dazzling, ephemeral, flashing, fleeting, momentary, overnight, rapid, spectacular, speedy, swift, transient |
Antonyms: |
slow |