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Steadfastness in Irish (Seasmhacht): Meaning, Pronunciation, Usage

‘seasmhacht’ also means: stability

The Irish for steadfastness is seasmhacht, a feminine noun.
Updated October 2026Report a mistake

How to say “steadfastness” in Irish

Irish:
seasmhacht
English:
steadfastness, stability
Word type:
noun
Gender:
feminine, third declension
Pronunciation:
“SHAS-vukht”  /ˈʃasˠwəxt̪ˠ/
Various forms
Genitive singular:
seasmhachta, na seasmhachta (e.g. ceist na seasmhachta, the question of steadfastness)

What does “seasmhacht” mean?

“Seasmhacht” has two alternative meanings. The most common comes first.

steadfastness
The quality of being firm, constant and unwavering in purpose or loyalty.Also: constancy, firmness, resolve, perseverance.
1 other meaning: stability
2stability
The state of being steady and not likely to change or give way.Also: steadiness, durability, sustainability.

“Seasmhacht” with the article

Here is seasmhacht after the article (an t-alt).

an tseasmhacht
the steadfastness
Feminine nouns take t before s after an

“Seasmhacht” in a sentence: Irish examples

Common Irish sentences using seasmhacht, the Irish word for steadfastness.

Léirigh sí seasmhacht mhór le linn na tréimhse deacra.
She showed great steadfastness during the difficult period.
Tá seasmhacht ag teastáil chun teanga a fhoghlaim.
You need perseverance to learn a language.
Is í an tseasmhacht an bua is fearr atá aige.
Steadfastness is his greatest virtue.
Bhí meas ag cách ar a seasmhacht.
Everyone respected her constancy.
Tá seasmhacht an gheilleagair tábhachtach don rialtas.
The stability of the economy is important to the government.
Ní raibh aon seasmhacht ina chuid oibre.
There was no consistency in his work.
Labhair an tAire faoi thábhacht na seasmhachta.
The Minister spoke about the importance of stability.

Other nouns in Irish

More everyday Irish nouns to learn next.

Steadfastness in Irish: frequently asked questions

What is the Irish for steadfastness?

The Irish for steadfastness is seasmhacht (pronounced “SHAS-vukht”). It’s a feminine noun. Depending on context it can also mean stability.

How do you pronounce seasmhacht in Irish?

Seasmhacht is said like “SHAS-vukht” (IPA /ˈʃasˠwəxt̪ˠ/).

Does seasmhacht have a plural?

No plural form is given for seasmhacht in the standard. Many abstract and mass nouns in Irish have no plural.

Does seasmhacht have more than one meaning?

Yes. Seasmhacht can mean steadfastness or stability, depending on context; the first is the most common.

Why does seasmhacht change to sheasmhacht?

After words like mo (my) and do (your) the first letter is lenited: mo sheasmhacht. After ár (our) it stays ár seasmhacht, because s does not take eclipsis.

How is seasmhacht related to other words?

It comes from the adjective seasmhach (steadfast, stable), itself from seas (stand). For persistent effort, buanseasmhacht (perseverance) is also used.

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