Find Synonyms

perpendicular Synonyms

Another word for perpendicular

Choosing another word for perpendicular depends on context, so the synonyms and similar words below are separated across 3 exact definitions and ranked by match 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 orthogonal to the floorboards."

Strongest
orthogonal
right-angled
Strong
square

• 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 vertical rock face."

Strongest
vertical
upright
plumb
Strong
erect
sheer
precipitous

• 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 vertical."

Strongest
vertical
Strong
plumb

Opposites of perpendicular

The opposite of perpendicular shifts depending on context. Common opposites include:

parallel
horizontal
level
flat
prone
oblique
askew
See all opposites of perpendicular

• Nearby Words

perniciousness
peroxide
perp
perpendicular
perpendicularly
perpetrate
perpetration

Cite this Entry

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