Webster's Revised Unabridged Dictionary · 1913

Interminable

Interminable , adjective

[Latin interminabilis: compare French interminable. See Terminate.]

Without termination; admitting no limit; boundless; endless; wearisomely protracted; as, interminable space or duration; interminable sufferings; an interminable sermon.
That wild interminable waste of waves. — Grainger