(third-person singular simple present keeps up, present participle keeping up, simple past and past participle kept up)
- To maintain; to preserve; to prevent from deteriorating.
- (idiomatic) To continue with (work, etc).
- (intransitive, idiomatic) To stay even or ahead.
- They ran so fast I could hardly keep up.
- To ensure that one remains well-informed about something
- I always try to keep up with ("keep up on") current affairs.