Synonyms of the word 
EVANESCENT → IMPERMANENT - TEMPORARY
evanescent
- adj. Vanishing, disappearing.
- adj. Ephemeral, momentary, fleeting.
- adj. Barely there; almost imperceptible.
impermanent
- adj. Not permanent; momentary.
temporary
- adj. Not permanent; existing only for a period or periods of time.
- adj. Existing only for a short time or short times; transient, ephemeral.
- n. One serving for a limited time; short-term employee.
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