something

An uncertain or unspecified thing; one thing.

I must have forgotten to pack something, but I can't think what.

I have something for you in my bag.

A quality to a moderate degree.

The performance was something of a disappointment.

That child is something of a genius.

A talent or quality that is difficult to specify.

She has a certain something.

Somebody who or something that is superlative or notable in some way.

He's really something! I've never heard such a great voice.

She's quite something. I can't believe she would do such a mean thing.

Having a characteristic that the speaker cannot specify.

"Very poetic." They came to a halt before the outer door. "It's very something," Rusty said wistfully. "How do you do it?"

"It's very — it's very something," said Lucy. "It's a kind of love-letter, isn't it?"

Somewhat; to a degree.

The baby looks something like his father.

Angelo. Yet giue leaue (my Lord,) That we may bring you something on the way

Used to adverbialise a following adjective

I miss them something terrible/rotten. (I miss them terribly)

You can't thrash when you have rheumatic fever – though you want to something awful, Mrs. White says.