Synonyms of endlessness

1 Syllable
length, year
2 Syllables
tallness, longness
3 Syllables
lastingness, lengthiness, spaciousness, ranginess, boundlessness, forever
4 Syllables
longitude, perpetuity, protractedness, eternity, timelessness, permanence, ceaselessness, eternalness, linearities, perpetuation, linearity, eternities
5 Syllables
extensiveness, everlastingness, eternality, sempiternity
7 Syllables
imperishability