endless

Synonyms: amaranthine boundless ceaseless constant continual continuous countless deathless enduring eternal everlasting illimitable immeasurable immortal incalculable incessant indeterminate infinite interminable limitless measureless monotonous multitudinous never-ending no end of no end to numberless overlong perpetual self-perpetuating unbounded unbroken undivided undying unending unfathomable uninterrupted unlimited unsurpassable untold without end

Antonyms: bounded completing ending finishing limited passing stopping terminable