› dictionary › upUp Definition & Meaning - Merriam-Webster up 1 of 6 adverb ˈəp 1 a (1) : in or into a higher position or level especially : away from the center of the earth (2) : from beneath the ground or water to the surface (3) : from below the horizon (4) : upstream sense 1 (5) : in or into an upright position sit up especially : out of bed b : upward from the ground or surface pull up a daisy c