kept up

(verb) maintain a required pace or level. Synonyms: keep up. Example: "He could not keep up and dropped out of the race."

(verb) lengthen or extend in duration or space. Synonyms: prolong, sustain, keep up. Examples: "We sustained the diplomatic negotiations as long as possible." "Prolong the treatment of the patient." "Keep up the good work."

(verb) keep in safety and protect from harm, decay, loss, or destruction. Synonyms: conserve, preserve, maintain, keep up. Examples: "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."

(verb) keep informed. Synonyms: keep up, keep abreast, follow. Example: "He kept up on his country's foreign policies."

(verb) prevent from going to bed at night. Synonyms: keep up. Examples: "The anticipation of the trip kept the children up all night." "I kept myself up all night studying for the exam."

(adj) kept in good condition. Synonyms: kept up(predicate), maintained, well-kept.