keep up

Definition

To maintain; to preserve; to prevent from deteriorating or falling.

Etymology

From Middle English kepen up (“to perpetuate, maintain, preserve”), equivalent to keep + up.

Example Sentences

• "The NRA is pumping groundwater into the River Itchen in Hampshire to keep up its flow and is trying to save three streams, the Tong, the Little Stour and the Dour from going dry this summer."
• "Non obstante the Change of Religion, the Plough-boies, and also the Schooleboies will keep-up and retain their old Ceremonies and Customes and priviledges."
• "Keep up the good work of entertaining your fans on court Steffi; we know you can do it; your fans are behind you all the way."