Find Antonyms

perpendicular Antonyms

Opposite of perpendicular

Because the opposite of perpendicular shifts with each meaning, the antonyms and opposite words below are separated across 3 exact definitions and ranked by contrast strength.
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• adjective (Context 1)

At an angle of 90 degrees to a given line, plane, or surface.

Usage Example

"The carpenter checked that the new wall was strictly parallel to the floorboards."

Strongest
parallel
Strong
oblique
askew

• adjective (Context 2)

Standing straight up at a right angle to the horizon; vertical or very steep.

Usage Example

"The hikers stood at the base of a nearly horizontal rock face."

Strongest
horizontal
level
Strong
flat
prone

• noun (Context 3)

A vertical line, direction, or position, or an instrument such as a plumb line used to determine it.

Usage Example

"Over centuries of soil movement, the ancient bell tower has leaned noticeably out of the horizontal."

Strongest
horizontal

Similar words to perpendicular

Words similar to perpendicular shift depending on context. Common synonyms include:

right-angled
vertical
orthogonal
upright
plumb
erect
square
sheer
See all synonyms of perpendicular

• Nearby Words

perniciousness
peroxide
perp
perpendicular
perpendicularly
perpetrate
perpetration

Cite this Entry

Wordmom. (2026). Antonyms for Perpendicular. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/perpendicular
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