Select the most appropriate synonym of the given word.
Peculiar

The correct option is Strange.

Explanation:

The word "Peculiar" means unusual, odd, or strange in a way that is noticeable or unexpected.

Let's analyze the given options:

1. Usual: Means normal, customary, or common. This is an antonym of peculiar.
2. Strange: Means unusual, odd, or surprising. This is the exact synonym of peculiar.
3. Frequent: Means occurring or done many times at short intervals.
4. Revolutionary: Means involving or causing a complete or dramatic change.

Therefore, the word closest in meaning to Peculiar is Strange.