perpetual Antonyms

sporadic yearly mountain pass stopgap mayfly in the meantime for now for the time being for the nonce here today, gone tomorrow waggle undulatory sporadical temporal temporality temporally temporary till transient transitory trend shortlived wavelike in constant change changed greatly ever evolving evolving all the time in constant evolution in continuous evolution in permanent evolution permanently changing for the duration as long as it lasts continuously evolving continuously developing always changing always evolving changing all the time constantly changing constantly developing constantly evolving continually developing continually evolving continuously changing in the present circumstances short-lived abysmal erratical evanescent FAST