If you say that something is endless, you mean that it is very large or lasts for a very long time, and it seems as if it will never stop. They turned into an endless street The war was endless. + endlessly end·less·ly They talk about it endlessly. endlessly long arcades of shops
Without end; having no end or conclusion; perpetual; interminable; applied to length, and to duration; as, an endless line; endless time; endless bliss; endless praise; endless clamor
having the ends united so as to form a continuous whole; "an endless chain" infinitely great in number; "endless waves" tiresomely long; seemingly without end; "endless debates"; "an endless conversation"; "the wait seemed eternal"; "eternal quarreling"; "an interminable sermon