Synonyms of limitless

1. illimitable, limitless, measureless, immeasurable (vs. measurable), unmeasurable, immensurable, unmeasured: usage: without limits in extent or size or quantity; "limitless vastness of our solar system"
2. unlimited (vs. limited), limitless, bottomless, oceanic, untrammeled, untrammelled: usage: 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. boundless, unbounded, limitless, infinite (vs. finite): usage: seemingly boundless in amount, number, degree, or especially extent; "unbounded enthusiasm"; "children with boundless energy"; "a limitless supply of money"