most transient

changeable deciduous emigrating ephemeral evanescent flash fleeting flitting fly-by-night flying fugacious fugitive going by impermanent insubstantial migrating momentary moving passing provisional short short-lived short-term temporal transmigratory unstable vacating volatile

enduring incessant lasting long-lasting neverending permanent persistent undying

ephemeral fleeting short-term transitory

brief flash fly-by-night flying fugitive passing short temporal volatile

changeable deciduous emigrating evanescent flitting fugacious going by impermanent insubstantial migrating momentary moving provisional short-lived transmigratory unstable vacating

enduring lasting lengthy long long-lived permanent perpetual