not final (adjective) tentative: conditional, experimental
Sinonime: 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
Antonime: enduring,
incessant, lasting, long-lasting, neverending, permanent,
persistent,
undying