Synonyms for prolong

Verb

1. prolong, protract, extend, draw out, lengthen

usage: lengthen in time; cause to be or last longer; "We prolonged our stay"; "She extended her visit by another day"; "The meeting was drawn out until midnight"

2. prolong, sustain, keep up, continue, uphold, carry on, bear on, preserve

usage: lengthen or extend in duration or space; "We sustained the diplomatic negociations as long as possible"; "prolong the treatment of the patient"; "keep up the good work"