Select the most appropriate ANTONYM of the given word.

Abate

Aggravate

The most appropriate antonym of the word abate is aggravate.

• Abate means "to become less in intensity, amount, or degree."
• Aggravate means "to make (something bad or unpleasant) worse."

The other words do not have the same meaning as abate, so they are not its antonyms.

• Moderate means "to make (something) less extreme or intense."
• Observe means "to watch or study something carefully."
• Decrease means "to become less in size, amount, or degree."