Not a few意思

"Not a few" is an English phrase that means "many" or "a good number of." It is used to emphasize that there is a significant amount or a large number of something. The phrase is often used in negative sentences or in sentences with negative constructions to emphasize the quantity.

For example:

The phrase "not a few" is often used in formal or literary writing, and it can add emphasis to the number of something being discussed.