keep up

verbs

maintain a required pace or level

"He could not keep up and dropped out of the race"

keep up

entails

compete for something; engage in a contest; measure oneself against others

compete, contend, vie

lengthen or extend in duration or space

"We sustained the diplomatic negotiations as long as possible"; "prolong the treatment of the patient"; "keep up the good work"

keep up, prolong, sustain

keep in safety and protect from harm, decay, loss, or destruction

"We preserve these archeological findings"; "The old lady could not keep up the building"; "children must be taught to conserve our national heritage"; "The museum curator conserved the ancient manuscripts"

conserve, keep up, maintain, preserve

keep informed

"He kept up on his country's foreign policies"

follow, keep abreast, keep up

prevent from going to bed at night

"The anticipation of the trip kept the children up all night"; "I kept myself up all night studying for the exam"

keep up

causes

not go to bed

"Don't stay up so late--you have to go to work tomorrow"; "We sat up all night to watch the election"

sit up, stay up