HeyRua Get the app

Accidental in Irish (tionóisceach): Meaning, Forms, Examples

The Irish for accidental is tionóisceach: bás tionóisceach, an accidental death.
Updated October 2026Report a mistake

How to say “accidental” in Irish

Irish:
tionóisceach
English:
accidental
Word type:
adjective
More accidental:
níos tionóiscí
Most accidental:
is tionóiscí
Plural:
tionóisceacha
Pronunciation:
“TIN-ohsh-kyukh”  /ˈtʲɪnoːʃcəx/

What does “tionóisceach” mean?

accidental
Happening by chance or by accident, not planned or intended.Also: chance, unintentional, fortuitous, incidental.

“Tionóisceach” after a noun

An Irish adjective comes after its noun. Here is tionóisceach after bás (death, masculine), after oíche (night, feminine) and after a plural.

after a masculine nounbás tionóisceachan accidental death
after a feminine nounoíche thionóisceachan accidental night
after a plural nounbásanna tionóisceachaaccidental deaths

séimhiú (the h) the ending

feminine
oíchenight
+
tionóisceachaccidental
=
oíche thionóisceachan accidental night

After a feminine noun the adjective gets a séimhiú, an h after its first letter: oíche thionóisceach. After a masculine noun it stays as it is: bás tionóisceach.

plural
básannadeaths
+
tionóisceachaaccidental, plural
=
básanna tionóisceachaaccidental deaths

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

More accidental, most accidental, very accidental

níosmore
+
tionóiscíaccidental
=
níos tionóiscímore accidental
ismost
+
tionóiscíaccidental
=
is tionóiscímost accidental

Bhí an dara tine níos tionóiscí ná an chéad cheann. The second fire was more accidental than the first one.

more accidentalníos tionóiscíin the past tense: ní ba thionóiscí
most accidentalis tionóiscíin the past tense: ba thionóiscí
as accidental aschomh tionóisceach leno change after chomh
very accidentalan-tionóisceachan- lenites, except d, t and s
too accidentalróthionóisceachró- lenites

“Tionóisceach” in a sentence: Irish examples

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

Ba bhás tionóisceach é, dar leis an gcróinéir.
It was an accidental death, according to the coroner.
Ba theagmháil thionóisceach í sa chluiche.
It was accidental contact in the game.
Tharla roinnt damáistí tionóisceacha don charr.
Some accidental damage happened to the car.
Bhí an dara tine níos tionóiscí ná an chéad cheann.
The second fire was more accidental than the first one.
Tá an chuma air go raibh an tine tionóisceach.
It looks as if the fire was accidental.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Accidental in Irish: frequently asked questions

What is the Irish for accidental?

The Irish for accidental is tionóisceach (pronounced “TIN-ohsh-kyukh”). It comes after the noun: bás tionóisceach, an accidental death; oíche thionóisceach, an accidental night.

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

níos tionóiscí is more accidental and is tionóiscí is most accidental. In the past tense they become ní ba thionóiscí and ba thionóiscí.

Why does tionóisceach become thionóisceach?

After a feminine singular noun an adjective is lenited: it gets an h after its first letter. So oíche thionóisceach (an accidental night) but bás tionóisceach (an accidental death), because bás is masculine.

What is the plural of tionóisceach?

With a plural noun tionóisceach becomes tionóisceacha: básanna tionóisceacha, oícheanta tionóisceacha.

How do you say very accidental in Irish?

an-tionóisceach. Too accidental is róthionóisceach, and as accidental as is chomh tionóisceach le.

How is 'tionóisceach' related to 'timpiste'?

'Tionóisceach' comes from 'tionóisc', a formal word for an accident; in everyday speech people usually say 'timpiste' and 'de thimpiste' for 'by accident'.

Learn Irish by
actually speaking it

Learn everyday Irish words like tionóisceach through guided conversation with Rua.

7-day free trial. Cancel anytime.

The HeyRua app home screen