Upward; up, or as if up, an ascent: as, to walk uphill.Leading or going up a rising ground; sloping upward: as, an uphill road.Attended with labor, fatigue, or exertion; difficult; severe; fatiguing; burdensome: as, uphill work; hence, not having free course; hampered: as, an uphill acquaintance.n. Rising ground; ascent; upward slope.