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Dangerous in Irish (dainséarach): Meaning, Forms, Examples

The Irish for dangerous is dainséarach: bóthar dainséarach, a dangerous road.
Updated October 2026Report a mistake

How to say “dangerous” in Irish

Irish:
dainséarach
English:
dangerous
Word type:
adjective
More dangerous:
níos dainséaraí
Most dangerous:
is dainséaraí
Plural:
dainséaracha
Pronunciation:
“DAN-shayr-akh”  /ˈd̪ˠanʲʃeːɾˠəx/

What does “dainséarach” mean?

dangerous
Likely to cause harm or injury.Also: perilous, hazardous, risky, unsafe.

Other Irish adjectives for dangerous: contúirteach (dangerous), baolach (dangerous), guasach (dangerous)

“Dainséarach” after a noun

An Irish adjective comes after its noun. Here is dainséarach after bóthar (road, masculine), after cathair (city, feminine) and after a plural.

after a masculine nounbóthar dainséaracha dangerous road
after a feminine nouncathair dhainséaracha dangerous city
after a plural nounbóithre dainséarachadangerous roads

séimhiú (the h) the ending

feminine
cathaircity
+
dainséarachdangerous
=
cathair dhainséaracha dangerous city

After a feminine noun the adjective gets a séimhiú, an h after its first letter: cathair dhainséarach. After a masculine noun it stays as it is: bóthar dainséarach.

plural
bóithreroads
+
dainséarachadangerous, plural
=
bóithre dainséarachadangerous roads

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

More dangerous, most dangerous, very dangerous

níosmore
+
dainséaraídangerous
=
níos dainséaraímore dangerous
ismost
+
dainséaraídangerous
=
is dainséaraímost dangerous

Tá an fharraige níos dainséaraí sa gheimhreadh. The sea is more dangerous in winter.

more dangerousníos dainséaraíin the past tense: ní ba dhainséaraí
most dangerousis dainséaraíin the past tense: ba dhainséaraí
as dangerous aschomh dainséarach leno change after chomh
very dangerousan-dainséarachan- lenites, except d, t and s
too dangerousródhainséarachró- lenites

“Dainséarach” in a sentence: Irish examples

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

Is bóthar dainséarach é sin san oíche.
That is a dangerous road at night.
Bhí sé ina sheasamh ar aill dhainséarach.
He was standing on a dangerous cliff.
Ná déan dearmad go bhfuil na madraí sin dainséarach.
Don't forget that those dogs are dangerous.
Tá an fharraige níos dainséaraí sa gheimhreadh.
The sea is more dangerous in winter.
Tá sé dainséarach snámh anseo.
It is dangerous to swim here.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Dangerous in Irish: frequently asked questions

What is the Irish for dangerous?

The Irish for dangerous is dainséarach (pronounced “DAN-shayr-akh”). It comes after the noun: bóthar dainséarach, a dangerous road; cathair dhainséarach, a dangerous city.

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

níos dainséaraí is more dangerous and is dainséaraí is most dangerous. In the past tense they become ní ba dhainséaraí and ba dhainséaraí.

Why does dainséarach become dhainséarach?

After a feminine singular noun an adjective is lenited: it gets an h after its first letter. So cathair dhainséarach (a dangerous city) but bóthar dainséarach (a dangerous road), because bóthar is masculine.

What is the plural of dainséarach?

With a plural noun dainséarach becomes dainséaracha: bóithre dainséaracha, cathracha dainséaracha.

How do you say very dangerous in Irish?

an-dainséarach. Too dangerous is ródhainséarach, and as dangerous as is chomh dainséarach le.

What is the difference between 'dainséarach' and 'contúirteach'?

Both mean dangerous; 'contúirteach' is the more traditional native word, while 'dainséarach' is also standard and widely used.

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