constant Play adjectiveOccurring continuously over a period of time.nounA situation that does not change. SYNONYMS abidingceaselesscontinualcontinuousdetermineddoggedendlesseternaleverlastingincessantinterminablenever-endingnon-stopperennialperpetualperseveringpersistentrelentlessresoluteround-the-clocksempiternalsteadfaststeadysustainedtenaciousunabatingunbrokenunceasingunendingunflagginguninterruptedunrelentingunrelievedunremittingunshakenunwaveringwithout respite