limitless

Adjective

• seemingly boundless in amount, number, degree, or especially extent
  • unbounded enthusiasm
    
  • children with boundless energy
    
  • a limitless supply of money
    

• having no limits in range or scope
  • to start with a theory of unlimited freedom is to end up with unlimited despotism- Philip Rahv
    
  • the limitless reaches of outer space
    

• without limits in extent or size or quantity
  • limitless vastness of our solar system
    

Related words

• Synonyms: 
  boundless , unbounded , unlimited , illimitable , measureless