💡 Words with a Similar Meaning to "Undefatigable"
Found via reverse dictionary — words that share a conceptual meaning.
| Word | Definition |
|---|---|
| untyreable | Obsolete spelling of untirable. [Incapable of being tired; never tiring.] |
| indomablenoun | Obsolete form of indomitable. [Incapable of being subdued, overcome, or vanquished.] |
| undefeasible | Obsolete form of indefeasible. [Not liable to being annulled or declared void.] |
| unhabile | Obsolete form of unable. [Not able; lacking a certain ability.] |
| indefeisible | Obsolete form of indefeasible. [Not liable to being annulled or declared void.] |
| inavailable | Obsolete form of unavailable. [(obsolete) Unavailing; ineffective.] |
| unvulnerable | Obsolete form of invulnerable. [Incapable of being injured; not vulnerable.] |
| unpatientnoun | (obsolete or nonstandard) impatient |
| unfallible | Obsolete form of infallible. [Without fault or weakness; incapable of error or fallacy.] |
| unevitablenoun | Obsolete form of inevitable. [Impossible to avoid or prevent.] |
| unfinisht | Obsolete form of unfinished. [Not finished.] |
| perseveraunt | Obsolete form of perseverant. [Enduring; persistent, resistant.] |
| fatig'd | Obsolete spelling of fatigued. [Tired; weary.] |
| labourous | Obsolete form of laborious. [Requiring much physical effort; toilsome.] |
| labourious | Obsolete form of laborious. [Requiring much physical effort; toilsome.] |
| unnumerable | Obsolete form of innumerable. [Not capable of being counted, enumerated, or numbered.] |
| unmutable | Obsolete form of immutable. [Unable to be changed without exception.] |
| laborous | Obsolete form of laborious. [Requiring much physical effort; toilsome.] |
| unoperative | Obsolete form of inoperative. [Not working or functioning; either idle or broken.] |
| unfrangible | Obsolete form of infrangible. [Unbreakable, indestructible, or very difficult to break.] |
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