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Question

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 

This question was previously asked in
SSC CGL 2016 (Tier 1) Previous Year Question Paper (11-Sep-2016) (Shift 2)
The correct answer is

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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Important Questions from One Word Substitution

  1. For the expression which has been underlined in each of the following sentences, choose the response (a), (b), (c) or (d) which most nearly expresses its meaning.

    The institution decided to give Mrs. Roy’s job to her son not because she was a social worker, but because she haddied in harness.

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  3. For the expression which has been underlined in each of the following sentences, choose the response (a), (b), (c) or (d) which most nearly expresses its meaning.

    I could not go up in lifefor want ofproper guidance.

  4. For the expression which has been underlined in each of the following sentences, choose the response (a), (b), (c) or (d) which most nearly expresses its meaning.

    Though he was arrogant, I could notdispense withhis services.

  5. For the expression which has been underlined in each of the following sentences, choose the response (a), (b), (c) or (d) which most nearly expresses its meaning.

    In spite of his hard work, he wasmade a scapegoatfor the failure of the project

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