Antonyms of adj atilt

1 sense of atilt

Sense 1
atilt, canted, leaning, tilted, tipped -- (departing or being caused to depart from the true vertical or horizontal; "the leaning tower of Pisa"; "the headstones were tilted")

INDIRECT (VIA vertical, inclined) -> horizontal -- (parallel to or in the plane of the horizon or a base line; "a horizontal surface")
INDIRECT (VIA inclined, horizontal) -> 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")

Similarity of adj atilt

1 sense of atilt

Sense 1
atilt, canted, leaning, tilted, tipped -- (departing or being caused to depart from the true vertical or horizontal; "the leaning tower of Pisa"; "the headstones were tilted")
       => inclined (vs. horizontal) (vs. vertical) -- (at an angle to the horizontal or vertical position; "an inclined plane")