- vertical, perpendicular - at right angles to the plane of the horizon or a base line; "a vertical camera angle"; "the monument consists of two vertical pillars supporting a horizontal slab"; "measure the perpendicular height"
Antonyms: inclined, atilt, canted, leaning, tilted, tipped, aslant, aslope, diagonal, slanted, slanting, sloped, sloping, high-pitched, low-pitched, pitched, salient, sidelong, skew, skewed, monoclinal, horizontal, crosswise, flat, level, naiant, swimming
- erect, vertical, upright - upright in position or posture; "an erect stature"; "erect flower stalks"; "for a dog, an erect tail indicates aggression"; "a column still vertical amid the ruins"; "he sat bolt upright"
- vertical - something that is oriented vertically
--1 is a kind of orientation
- upright, vertical - a vertical structural member as a post or stake; "the ball sailed between the uprights"
--2 is a kind of structural member
--2 is a part of goalpost
--2 has particulars:column, pillar; jamb; post; scantling, stud; shaft, scape; stile - upright, vertical - a vertical structural member as a post or stake; "the ball sailed between the uprights"