Let's find the word that has the opposite meaning (antonym) of "mischievous". Understanding the meaning of the given word and each option is key to selecting the correct antonym.

First, let's define the word mischievous.

• Mischievous: Causing or showing a fondness for causing trouble in a playful way. Often used to describe children who are naughty but not seriously harmful. It implies a playful, sometimes annoying, behavior.

Now, let's examine each option:

1. behaved: Acting in a particular way, especially in a way that is controlled, calm, or socially acceptable. A behaved person is well-mannered and does not cause trouble.
2. detrimental: Tending to cause harm. This word describes something harmful or damaging, which is different from the playful trouble caused by being mischievous.
3. impish: Fond of doing slightly naughty things for fun; mischievous. This word is a synonym for mischievous.
4. malicious: Characterized by malice; intending or intended to do harm. This word implies deliberate harm or ill will, which is more serious than being mischievous.

We are looking for the opposite of "mischievous". Let's compare the meanings:

• "Mischievous" involves playful naughtiness or causing minor trouble.
• "Behaved" involves acting in a controlled, proper, or socially acceptable manner, which is the opposite of causing trouble or being naughty.
• "Detrimental" means harmful, which is not the direct opposite of mischievous in terms of behavior.
• "Impish" is a synonym, not an antonym.
• "Malicious" means intentionally harmful, which is a different and more severe concept than mischievous.

Comparing the options, the word that best describes behavior opposite to causing playful trouble (mischievous) is acting in a controlled and proper way, which is described by the word behaved.

Therefore, the antonym of mischievous is behaved.

Revision Table: Understanding Mischievous and its Antonyms

Additional Information on Antonyms and Synonyms

Understanding antonyms and synonyms helps improve vocabulary and comprehension. Antonyms are words with opposite meanings, while synonyms are words with similar meanings.

• Finding the correct antonym often involves considering the specific shade of meaning of the word. For "mischievous," the focus is on playful or minor trouble, so the opposite is orderly or proper conduct.
• Words can have multiple antonyms or synonyms depending on the context.
• Using a thesaurus can be helpful, but it's important to understand the subtle differences in meaning between words listed as synonyms or antonyms.

Regular practice with vocabulary exercises is a great way to master antonyms and synonyms for exams.