The term ONE WAY UP can be solved using four different crossword solutions: STAIR (5 letters), STEPS (5 letters), STAIRS (6 letters), and TBAR (4 letters). STAIRS are a set of steps that lead from one level to another, usually inside a building. Steps are a series of flat surfaces that allow people to ascend or descend a slope. A t-bar is a type of ski lift that consists of a metal bar attached to two cables that pull the bar up the mountain.