1. [ verb ] maintain a required pace or level

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

Related terms: keep_step compete
2. [ verb ] lengthen or extend in duration or space
Synonyms: sustain prolong

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

Related terms: continue retain prolongation maintainer
3. [ verb ] keep in perfect or unaltered condition
Synonyms: maintain preserve

"We preserve these archeological findings" "The old lady could not keep up the building"

Related terms: keep hold_the_line
4. [ verb ] to keep up and reserve for personal or special use
Synonyms: maintain save preserve conserve

: "save something in case you hit trouble."

Related terms: keep keep record conserve embalm plastinate hold_the_line care conservation
5. [ verb ] keep informed
Synonyms: follow keep_abreast

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

Related terms: trace
6. [ verb ] prevent from going to bed at night
Synonyms: sit_up stay_up

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

Related terms: wake sit_up
Similar spelling:   keep_off