Antonyms of adj naiant

1 sense of naiant

Sense 1
naiant, swimming -- (applied to a fish depicted horizontally)

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")
INDIRECT (VIA horizontal, vertical) -> inclined -- (at an angle to the horizontal or vertical position; "an inclined plane")

Similarity of adj naiant

1 sense of naiant

Sense 1
naiant, swimming -- (applied to a fish depicted horizontally)
       => horizontal (vs. vertical) (vs. inclined) -- (parallel to or in the plane of the horizon or a base line; "a horizontal surface")