In the following question, out of the four alternatives, select the word which is most similar in meaning to the given informal word: Nincompoop.

Introduction / Context:
This synonym question uses a humorous or informal English word: nincompoop. Examinations sometimes test such words to check if you can connect informal vocabulary to its more standard equivalent. Recognising these words also helps you understand novels, cartoons and casual conversations in English.

Given Data / Assumptions:

• Target word: Nincompoop.
• Options: Wise, Fool, Lover, Companion.
• We must select the option that is closest in meaning to nincompoop.
• We assume the usual meaning of nincompoop: a silly or stupid person.

Concept / Approach:
Nincompoop is a light hearted word used to describe someone who behaves in a foolish or ridiculous way. It is not a serious technical term; it is more like calling someone a silly fool. Among the options, Fool is the only word that directly refers to a person who lacks good sense or behaves in a stupid manner. Wise means intelligent and sensible, which is the opposite of the intended meaning. Lover and Companion describe relationships, not intelligence or behaviour.

Step-by-Step Solution:
Recall: nincompoop is used in sentences such as “Do not be such a nincompoop,” meaning “Do not be so foolish.”Option Wise: a wise person shows good judgment, so this is actually contrary to the idea of being silly.Option Lover: refers to someone in a romantic or affectionate relationship, unrelated to foolishness.Option Companion: simply means someone who accompanies or spends time with another person.Option Fool: denotes a person who acts stupidly or lacks sense, which is exactly what nincompoop implies.

Verification / Alternative check:
Substitute the options in a sample sentence: “He acted like a complete nincompoop in the meeting.” Changing nincompoop to fool gives “He acted like a complete fool in the meeting,” which preserves the meaning perfectly. Replacing it with wise, lover or companion makes the sentence meaningless or opposite in sense.

Why Other Options Are Wrong:
Wise is an antonym rather than a synonym, because wisdom is associated with careful and thoughtful behaviour. Lover and Companion change the focus from intelligence or behaviour to personal relationships. Neither term carries the idea of silliness or stupidity, which is central to the word nincompoop.

Common Pitfalls:
Candidates sometimes overthink humorous words and hesitate because they seem childish. However, many classic English books, especially for children or light comedy, use nincompoop and similar terms. When an exam asks for a synonym, choose the simple, obvious equivalent in standard vocabulary. Here, fool is exactly that straightforward match.

Final Answer:
The word similar in meaning to “Nincompoop” is Fool.