up and down adverb 4adjective 3 adverb4 •Upward and downward, alternately.the tide goes up and downmy blood pressure goes up and down •Forwards and backwards alternately along a path. •(figurative) In various places, e.g., in a country.There's also a barber's shop and that staple of railway stations up and down the UK - a WH Smith. — 2022 •Staunchly, unwaveringly, obstinately.He swore up and down that he hadn't taken the money. adjective3 •Vertical; perpendicular; said of the cable when the anchor is under, or nearly under, the hawse hole, and the cable is taut. •(Philippines) Of a building, having two stories. •(figurative) Plain; downright.