endlessly

• POS: Adverb
• HYPHEN: end=less=ly

CIDE DICTIONARY

endlessly, adv. 

 In an endless manner.  [1913 Webster]

THESAURUS

endlessly

ad infinitum, again and again, at a stretch, boresomely, boringly, boundlessly, ceaselessly, connectedly, constantly, continually, continuously, cumulatively, cyclically, drearisomely, dully, eternally, everlastingly, fatiguingly, forever, harpingly, illimitably, immeasurably, immensely, in perpetuity, incalculably, incessantly, incomprehensibly, indestructibly, infinitely, innumerably, interminably, irksomely, limitlessly, measurelessly, monotonously, never-endingly, on a stretch, on and on, on end, perdurably, perennially, permanently, perpetually, repetitively, round the clock, steadily, tediously, time without end, tiresomely, to infinity, together, unbrokenly, unceasingly, unendingly, unintermittently, uninterruptedly, unrelievedly, unvaryingly, wearisomely, wearyingly, without a break, without cease, without end, without limit, without stopping, world without end