interminable
AdjectiveWordNet 3.0
Webster's Dictionary (GCIDE)
Interminable \In*ter"mi*na*ble\, a. [L. interminabilis: cf. F. interminable. See Terminate.] Without termination; admitting no limit; boundless; endless; wearisomely protracted; as, interminable space or duration; interminable sufferings; an interminable sermon. [1913 Webster +PJC]
That wild interminable waste of waves. --Grainger.
Syn: Boundless; endless; limitless; illimitable; immeasurable; infinite; unbounded; unlimited. [1913 Webster]