In the following question, out of the four alternatives, select the alternative which is the best one word substitute for the given phrase: A roundabout way of speaking.

Introduction / Context:
One word substitution questions ask you to replace a descriptive phrase with a single precise word. This tests both your vocabulary and your ability to match meanings accurately. Here, the phrase is a roundabout way of speaking, which describes a particular style of communication where someone does not speak directly but uses many words to express a simple idea.

Given Data / Assumptions:
- Phrase: A roundabout way of speaking. - Options: Centipede, Circumlocution, Coercion, Concentric. - We need the single word that captures this indirect and wordy manner of speaking.

Concept / Approach:
Circumlocution is a noun that refers to the use of many words where fewer would do, especially in a deliberate attempt to be vague, indirect or evasive. It is built from Latin roots meaning around and speak. This exactly matches the idea of a roundabout way of speaking. The other options describe completely different concepts: an insect, forced persuasion and a geometric arrangement. Recognising the root circum helps to connect the word with going around the main point instead of speaking straight.

Step-by-Step Solution:
Step 1: Understand the phrase a roundabout way of speaking as indirect, wordy speech that avoids direct expression. Step 2: Examine Centipede. A centipede is a type of insect or arthropod with many legs. It has nothing to do with speaking. Step 3: Examine Circumlocution. This word combines circum, meaning around, with a root relating to speaking, and means the use of too many words to say something, especially when avoiding the direct point. Step 4: Examine Coercion. Coercion refers to forcing someone to do something by pressure or threats, which is unrelated to the style of speaking. Step 5: Examine Concentric. Concentric is used in geometry for circles or figures that share the same centre. It does not address communication at all.

Verification / Alternative check:
Insert circumlocution back into a sentence. For example, Instead of stating the truth clearly, he indulged in circumlocution. This sentence means that he spoke in a roundabout, indirect manner. Replacing circumlocution with a roundabout way of speaking keeps the meaning almost unchanged. The same replacement with centipede, coercion or concentric is impossible. Therefore, circumlocution is a perfect one word substitute for the given phrase.

Why Other Options Are Wrong:
Centipede is wrong because it names a creature and has no relation to language or communication. Coercion is wrong because it refers to forcing someone, not to speaking indirectly. Concentric is wrong because it is a geometric term and does not describe a way of speaking.

Common Pitfalls:
Students sometimes pick options based on unfamiliarity, assuming the most unusual word must be correct. While circumlocution may sound unfamiliar, it is the only option that actually fits the meaning of the phrase. To avoid confusion, it is helpful to learn common word formation patterns, such as circum meaning around in words like circumference and circumnavigate. This helps you remember that circumlocution is speech that goes around the point instead of addressing it directly.

Final Answer:
The best one word substitute for “A roundabout way of speaking” is Circumlocution.