less and less

less and less

A phrase indicating that something is dwindling or becoming less frequent. She used to make mistakes all the time, but now that she's familiar with the job, it's been happening less and less. I have less and less interest in Adam the more time I spend with him.
See also: and, less
References in classic literature ?
As the sky grew less gloomy; indeed, began to grow a little genial, he became still less and less a recluse; as if, when the ship had sailed from home, nothing but the dead wintry bleakness of the sea had then kept him so secluded.