Anil could not go to his friend’s party, as he had fever and was __________.

The blank needs an idiom meaning to feel sick or unwell.

Option 1 -> beneath the weather -> incorrect preposition; this is not a standard idiom.

Option 2 -> under the weather -> means feeling sick or unwell, which fits the context perfectly.

Option 3 -> beside the weather -> incorrect preposition; this is not a standard idiom.

Option 4 -> outside the weather -> incorrect preposition; this is not a standard idiom.

When you're feeling a bit sick or not quite yourself, you can say you're under the weather. It's like the weather is pressing down on you, making you feel sluggish and unwell - perfect for those days when you need to stay home with a fever instead of going out to have fun.