That cannot be tired out; not yielding to fatigue; untiring
Having or showing a capacity for protracted effort, regardless of difficulty or frustration
Having no limit or limits; unrestricted:
Unrelenting or unremitting:
Persistent or untiring.
Not kept within bounds; unrestrained:
Being without boundaries or limits; unlimited:
Alternative form of neverending.
Actual, not just nominal; participating
Characteristic of a tireless person; continuing, persistent, etc.
The definition of endless is continuing forever, or lasting for a very long time.
(--- Math.) Indefinitely large; greater than any finite number however large
Having no restrictions or controls:
Always reliable; certain
Not tiring or ceasing; indefatigable or persistent:
The definition of tired is being bored with something, or something that has become stale or being fatigued and in need of rest.
Find another word for inexhaustible. In this page you can discover 22 synonyms, antonyms, idiomatic expressions, and related words for inexhaustible, like: indefatigable, continue, unsleeping, limitless, unwearied, unflagging, unbounded, boundless, never-ending, active and tireless.