n. 25B6; adjective
the upper floor : HIGHER, superior; top.
the upper echelons of the party : SENIOR, superior, higher-level, higher-ranking, top.
lower.
25A0; the upper hand AN ADVANTAGE, the edge, the whip hand, a lead, a head start, ascendancy, superiority, supremacy, sway, control, power, mastery, dominance, command.