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Perpendicular in Irish (ceartingearach): Meaning, Forms, Examples

The Irish for perpendicular is ceartingearach: balla ceartingearach, a perpendicular wall.
Updated October 2026Report a mistake

How to say “perpendicular” in Irish

Irish:
ceartingearach
English:
perpendicular
Word type:
adjective
More perpendicular:
níos ceartingearaí
Most perpendicular:
is ceartingearaí
Plural:
ceartingearacha
Pronunciation:
“KYART-ing-ar-ukh”  /ˈcaɾˠtˠɪŋʲəɾˠəx/

What does “ceartingearach” mean?

perpendicular
Standing at a right angle to a line or surface, especially exactly upright.Also: vertical, upright, plumb, at right angles.

“Ceartingearach” after a noun

An Irish adjective comes after its noun. Here is ceartingearach after balla (wall, masculine), after líne (line, feminine) and after a plural.

after a masculine nounballa ceartingearacha perpendicular wall
after a feminine nounlíne cheartingearacha perpendicular line
after a plural nounballaí ceartingearachaperpendicular walls

séimhiú (the h) the ending

feminine
líneline
+
ceartingearachperpendicular
=
líne cheartingearacha perpendicular line

After a feminine noun the adjective gets a séimhiú, an h after its first letter: líne cheartingearach. After a masculine noun it stays as it is: balla ceartingearach.

plural
ballaíwalls
+
ceartingearachaperpendicular, plural
=
ballaí ceartingearachaperpendicular walls

With a plural noun the adjective takes its plural form, ceartingearacha. It also gets an h after a plural that ends in a slender consonant; after other plurals it does not: línte ceartingearacha.

More perpendicular, most perpendicular, very perpendicular

níosmore
+
ceartingearaíperpendicular
=
níos ceartingearaímore perpendicular
ismost
+
ceartingearaíperpendicular
=
is ceartingearaímost perpendicular

Tá an cuaille seo níos ceartingearaí ná an ceann eile. This pole is more perpendicular than the other one.

more perpendicularníos ceartingearaíin the past tense: ní ba cheartingearaí
most perpendicularis ceartingearaíin the past tense: ba cheartingearaí
as perpendicular aschomh ceartingearach leno change after chomh
very perpendicularan-cheartingearachan- lenites, except d, t and s
too perpendicularrócheartingearachró- lenites

“Ceartingearach” in a sentence: Irish examples

With a masculine noun, a feminine noun, a plural, a comparison and on its own.

Tarraing líne ó bharr an bhalla cheartingearaigh.
Draw a line from the top of the perpendicular wall.
Tarraing líne cheartingearach ar an léarscáil.
Draw a perpendicular line on the map.
Tá na ballaí ceartingearach sa seomra seo.
The walls in this room are perpendicular.
Tá an cuaille seo níos ceartingearaí ná an ceann eile.
This pole is more perpendicular than the other one.
Tá an líne seo ceartingearach leis an mbonn.
This line is perpendicular to the base.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Perpendicular in Irish: frequently asked questions

What is the Irish for perpendicular?

The Irish for perpendicular is ceartingearach (pronounced “KYART-ing-ar-ukh”). It comes after the noun: balla ceartingearach, a perpendicular wall; líne cheartingearach, a perpendicular line.

How do you say more perpendicular and most perpendicular in Irish?

níos ceartingearaí is more perpendicular and is ceartingearaí is most perpendicular. In the past tense they become ní ba cheartingearaí and ba cheartingearaí.

Why does ceartingearach become cheartingearach?

After a feminine singular noun an adjective is lenited: it gets an h after its first letter. So líne cheartingearach (a perpendicular line) but balla ceartingearach (a perpendicular wall), because balla is masculine.

What is the plural of ceartingearach?

With a plural noun ceartingearach becomes ceartingearacha: ballaí ceartingearacha, línte ceartingearacha.

How do you say very perpendicular in Irish?

an-cheartingearach. Too perpendicular is rócheartingearach, and as perpendicular as is chomh ceartingearach le.

What is the difference between 'ceartingearach' and 'ingearach'?

'Ingearach' alone means vertical or perpendicular; 'ceartingearach' stresses that it is exactly perpendicular, at a true right angle.

Which preposition is used with 'ceartingearach'?

Use 'le': 'ceartingearach leis an líne' means perpendicular to the line.

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