Reverse Dictionary: ENDLESS

ADJECTIVES
AEVITERNAL everlasting, endless, eternal → 1660 obs.
FOR ENDWAYS endless, without number, continuous → 1859 Eng. dial.
INTERMINATE that is without end; endless, boundless, infinite → 1533
INTERMINATED that is without end; endless, boundless, infinite → a1734 obs.
SISYPHEAN of or pert. to Sisyphus (a king of Corinth, whose punishment in Hades was to roll a heavy stone up a hill; as he reached the top, the stone rolled down again); resembling the fruitless toil of Sisyphus; endless and ineffective → 1635
SISYPHIAN of or pert. to Sisyphus (a king of Corinth, whose punishment in Hades was to roll a heavy stone up a hill; as he reached the top, the stone rolled down again); resembling the fruitless toil of Sisyphus; endless and ineffective → 1599

ADVERBS
AD INFINITUM to infinity; again and again; endlessly, forever → 1596
AEVITERNALLY endlessly, eternally → 1608