protracted

(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."

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