Let's find the most appropriate synonym for the word "Strenuous". Understanding the meaning of the word and the given options is key to solving this vocabulary question.

Understanding Strenuous

"Strenuous" is an adjective. It typically describes something that requires great effort or energy, or something that is difficult and tiring.

• Example: Running a marathon is a strenuous activity.
• Example: Studying for a difficult exam can be a strenuous process.

Analyzing the Options

Now, let's look at the meanings of the given options:

• Effective: Successful in producing a desired or intended result.
• Amicable: Characterized by friendliness and absence of discord.
• Formidable: Inspiring fear or respect through being impressively large, powerful, intense, or capable; difficult to overcome or deal with.
• Manageable: Capable of being managed or controlled.

Evaluating Options as Synonyms for Strenuous

We need to find the word that is closest in meaning to "strenuous" among the choices.

• "Effective" means producing a good result. This is not related to requiring effort.
• "Amicable" means friendly. This is not related to requiring effort or difficulty.
• "Formidable" means difficult to overcome or deal with, often inspiring respect due to difficulty. A "formidable task" is one that is very difficult and likely requires great effort to complete. This aligns somewhat with the idea of something being difficult and demanding, which is part of the meaning of "strenuous".
• "Manageable" means easy to handle or control. This is the opposite of "strenuous", which implies difficulty and effort.

Comparing the options, "Formidable" is the closest choice. While "strenuous" focuses on the effort required, and "formidable" often highlights the challenge or difficulty that inspires awe or fear, a "formidable" task is inherently "strenuous" because it requires significant effort to address its difficulty.

Determining the Most Appropriate Synonym

Based on the analysis, "Formidable" is the option that best captures the sense of difficulty and challenge often associated with something "strenuous". It suggests something that is not easily tackled and requires significant effort, aligning it as the most appropriate synonym among the given choices.

Revision Table: Strenuous Synonym Practice

Additional Information: Vocabulary Building

Expanding your vocabulary is essential for understanding and using English effectively. When learning new words like "strenuous" and "formidable", try to:

• Understand the precise meaning and nuances of the word.
• Learn its synonyms (words with similar meanings) and antonyms (words with opposite meanings). For "strenuous", an antonym could be "easy" or "simple". For "formidable", an antonym might be "easy" or "simple" or "unintimidating".
• See how the word is used in different sentences or contexts.
• Practice using the word yourself in speaking and writing.
• Recognize that sometimes, among a set of options, you need to choose the *most appropriate* synonym, even if no option is a perfect match in all contexts.