That cannot be tired out; not yielding to fatigue; untiring
Firm in position or place; fixed.
Characterized by continuous change, activity, or progress:
Not tiring or ceasing; indefatigable or persistent:
Always able to supply more; inexhaustible:
Actual, not just nominal; participating
Remaining steady in affections or loyalties; faithful
Having a strong or substantial construction or constitution:
Firmly loyal or constant; unswerving.
That does not become tired; untiring or unwavering
Not tired, tiring, or relenting; indefatigable.
Not remaining firm in mind or purpose
(Math.) Having no fixed value
The definition of inexhaustible is something that cannot be used up, or has limitless energy.
Unrelenting or unremitting:
Having or showing a capacity for protracted effort, regardless of difficulty or frustration
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 unflagging. In this page you can discover 25 synonyms, antonyms, idiomatic expressions, and related words for unflagging, like: firm, indefatigable, unwaver, steady, dynamic, untiring, unfailing, active, constant, determined and staunch.