1. Maintain a required pace or level
   "He could not keep up and dropped out of the race" 
2. Lengthen or extend in duration or space
   "keep up the good work"
   - prolong, sustain 
3. Keep in safety and protect from harm, decay, loss, or destruction
   "The old lady could not keep up the building"
   - conserve, preserve, maintain 
4. Keep informed
   "He kept up on his country's foreign policies"
   - keep abreast, follow 
5. Prevent from going to bed at night

Derived forms: kept up, keeping up, keeps up

See also: keep

Type of: bear on, carry on, continue, keep, preserve, uphold

• stop consonant
• stop dead
• stop number
• stop order
• stop payment
• stop press
• stop up
• stop-loss order
• stopcock
• stope
• Stopes
• stopgap
• stoplight
• stopover
• stoppable
• stoppage
• stoppage time
• Stoppard
• stopped
• stopped-up
• stopper
• stopper knot
• stoppered
• stopping
• stopping point