In the following question, out of the four alternatives, choose the one which can be substituted for the given words/sentence. Incapable of feeling tired or exhausted
indefatigable
Understanding the Phrase: Incapable of Feeling Tired or Exhausted
The question asks for a single word that means someone is unable to feel tired or exhausted. This describes someone who can continue working or performing an activity for a long time without getting weary.
Analyzing the Given Options
Let's look at each option and its meaning to find the best fit for the phrase "Incapable of feeling tired or exhausted".
- invincible: This word means too powerful to be defeated or overcome. While someone invincible might not get tired in a fight, the primary meaning is about being unbeatable, not specifically about physical or mental exhaustion.
- inflatable: This means capable of being inflated or filled with air or gas. This word is completely unrelated to feeling tired or exhausted.
- indefatigable: This word describes a person or their efforts as persisting tirelessly. The root word 'fatigue' means tiredness, and 'in-' is a negative prefix, meaning 'not'. So, 'indefatigable' literally means 'not able to be fatigued', which is exactly what "incapable of feeling tired or exhausted" means.
- inextricable: This means impossible to disentangle or separate. This word is used to describe complex situations or relationships that are tightly interwoven. It has nothing to do with tiredness.
Determining the Correct Substitution
Based on the definitions, the word that perfectly substitutes the phrase "Incapable of feeling tired or exhausted" is indefatigable.
An indefatigable person is someone who shows persistent and tireless enthusiasm or energy.
Revision Table: Option Meanings
| Option | Meaning | Fits the phrase? |
|---|---|---|
| invincible | Too powerful to be defeated or overcome. | No |
| inflatable | Capable of being filled with air or gas. | No |
| indefatigable | Persisting tirelessly; incapable of being fatigued. | Yes |
| inextricable | Impossible to disentangle or separate. | No |
Additional Information on Indefatigable and Related Concepts
The word indefatigable comes from the Latin word 'indefatigabilis', meaning 'not able to be wearied'. It is a useful word to describe someone with immense stamina or dedication.
- Synonyms: Tireless, unwearying, unflagging, persistent, tenacious.
- Antonym: Fatigable (capable of being tired), weary.
Understanding such one-word substitutions is crucial for improving vocabulary and performance in competitive exams and general English proficiency tests.
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