Limitless
WordNet
adjective
(1) Seemingly boundless in amount, number, degree, or especially extent
"Unbounded enthusiasm"
"Children with boundless energy"
"A limitless supply of money"
(2) 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"
(3) Without limits in extent or size or quantity
"Immeasurable vastness of our solar system"