Synonyms of perpetuity

3 Syllables
endlessness, sequence, continuum, constancy
4 Syllables
continuance, unboundedness, infinities, eternity, incessantness, endurance, timelessness, continuousness, subsequence, ceaselessness, eternalness, limitlessness, vastitude, continuities, continuity, eternities, catenation, infinity
5 Syllables
measurelessness, unlimitedness, infinitude, immortality, infiniteness, everlastingness, successiveness, eternality, sempiternity
6 Syllables
inexhaustibleness, consecutiveness, immeasurableness
7 Syllables
inexhaustibility, imperishability, immeasurability