endless

(s) tiresomely long; seemingly without end
- endless debates
- an endless conversation
- the wait seemed eternal
- eternal quarreling
- an interminable sermon
interminable, eternal,
(s) infinitely great in number
- endless waves
(s) having no known beginning and presumably no end
- the dateless rise and fall of the tides
- time is endless
- sempiternal truth
dateless, sempiternal,
(s) having the ends united so as to form a continuous whole
- an endless chain

interminable eternal dateless sempiternal

endlessly endlessness