prolonged

(verb) lengthen in time; cause to be or last longer. Synonyms: prolong, protract, extend, draw out. Examples: "We prolonged our stay." "She extended her visit by another day." "The meeting was drawn out until midnight."

(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."

(adj) relatively long in duration; tediously protracted. Synonyms: drawn-out, extended, lengthy, protracted. Examples: "A drawn-out argument." "An extended discussion." "A lengthy visit from her mother-in-law." "A prolonged and bitter struggle." "Protracted negotiations."

(adj) drawn out or made longer spatially. Synonyms: elongated, extended, lengthened. Examples: "Picasso's elongated don quixote." "Lengthened skirts are fashionable this year." "The extended airport runways can accommodate larger planes." "A prolonged black line across the page."