(a.) Sloping upward; rising as a hillside; -- opposed to declivous.

Olympian acclinate acclivitous aerial airy altitudinous anabatic ascendant ascensional ascensive aspiring axial back back-flowing backward climbing colossal descending dominating down-trending downward drifting elevated eminent ethereal exalted flowing fluent flying going gyrational gyratory haughty high high-pitched high-reaching high-set high-up in the ascendant leaping lofty monumental mounting outtopping overlooking overtopping passing plunging progressive prominent rampant rearing reflowing refluent regressive retrogressive rising rotary rotational rotatory running rushing saltatory scandent scansorial sideward sinking skyrocketing soaring spiraling spiring springing steep streaming sublime superlative supernal topless toplofty topping towering towery up-trending uparching upcoming upgoing upgrade uphill uphillward uplifted upreared uprising upsloping upward upwith