look (one) up and down
To visually inspect one in a blatant and often tactless manner. When I stepped into the office, the boss looked me up and down before telling me to take a seat. I looked the strange woman up and down, wondering if she were really here to help me or just another spy.
look up and down (for someone or something)
to look everywhere for someone or something. Where is Kelly? I looked up and down for her. I can't find her. I looked up and down, but no Kelly.
look up and down something
to gaze up and then down something, such as a street. We looked up and down the street and saw no cars, no houses, and no people. Mary looked up and down the highway, but she could not find her lost hubcap.
look up and down
see under look over.