Synonyms and related words :
ascending, back, back-flowing, backward, centermost, central, centralized, centric, centroidal, centrosymmetric, concentrated, descending, down-trending, downward, drifting, flowing, fluent, flying, geocentric, going, gyrational, gyratory, key, middle, middlemost, midmost, mounting, omphalic, passing, pivotal, plunging, progressive, reflowing, refluent, regressive, retrogressive, rising, rotary, rotational, rotatory, running, rushing, sideward, sinking, soaring, streaming, umbilical, up-trending, upward,