Understanding One-Word Substitutions: One Who Does Not Tire Easily

One-word substitution is an important part of vocabulary building. It helps in expressing a group of words with a single word, making communication more concise and effective. The task here is to find a single word that accurately represents the phrase "One who does not tire easily".

Analysing the Options for 'One Who Does Not Tire Easily'

Let's examine the meaning of each provided option to determine which one fits the description "One who does not tire easily".

• Indefatigable: This word is formed from 'in-' (meaning not), 'de-' (meaning completely), and 'fatigue' (meaning tiredness). Therefore, 'indefatigable' means not capable of being tired out; not yielding to fatigue; tireless.
• Indelible: This word refers to something that cannot be removed, erased, or washed away. It often describes marks or memories that are permanent.
• Infallible: This term describes someone or something incapable of making mistakes or being wrong. It means unfailing or error-proof.
• Inevitable: This word is used to describe something that is certain to happen and cannot be avoided or prevented.

Identifying the Correct Word for 'One Who Does Not Tire Easily'

Comparing the meanings of the options with the given group of words "One who does not tire easily", we can see which word is the most appropriate substitute.

• 'Indelible' relates to permanence, not tiredness.
• 'Infallible' relates to being free from error, not tiredness.
• 'Inevitable' relates to certainty of occurrence, not tiredness.
• 'Indefatigable' directly means not easily tired or tireless.

Therefore, the word that means the same as "One who does not tire easily" is 'indefatigable'. An indefatigable person can continue working or trying for a very long time without getting tired.

Revision Table: Word Meanings and One-Word Substitution

Additional Information: Understanding Word Roots for Vocabulary

Understanding common prefixes and roots can help in deciphering the meaning of unfamiliar words. For the words discussed:

• The prefix 'in-' often means "not" or "without". (Examples: inactive, invisible, incapable)
• The root 'fatigue' relates to tiredness.
• The root '-ible' or '-able' indicates capability or ability.

Thus, 'in-de-fatig-able' literally breaks down to "not completely capable of being tired". This reinforces the meaning of 'indefatigable' as someone who does not tire easily.