endless

Adjective

• having the ends united so as to form a continuous whole
  • an endless chain
    

• having no known beginning and presumably no end
  • the dateless rise and fall of the tides
    
  • time is endless
    
  • sempiternal truth
    

• 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
    

Related words

• Synonyms: 
  dateless , sempiternal , eternal , interminable