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Effectiveness in Irish (Éifeachtacht): Meaning, Pronunciation, Usage

‘éifeachtacht’ also means: efficiency

The Irish for effectiveness is éifeachtacht, a feminine noun.
Updated October 2026Report a mistake

How to say “effectiveness” in Irish

Irish:
éifeachtacht
English:
effectiveness, efficiency
Word type:
noun
Gender:
feminine, third declension
Pronunciation:
“AY-fakh-tukht”  /eːfʲəxt̪ˠəxt̪ˠ/
Various forms
Genitive singular:
éifeachtachta, na héifeachtachta (e.g. measúnú éifeachtachta, assessment of effectiveness)

What does “éifeachtacht” mean?

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

effectiveness
The quality of producing the intended result or having a real effect.Also: efficacy, effect.
1 other meaning: efficiency
2efficiency
The ability to do something well and competently without waste.Also: competence, capability.

“Éifeachtacht” with the article

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

an éifeachtacht
the effectiveness
No change: feminine nouns starting with a vowel keep their form after an

“Éifeachtacht” in a sentence: Irish examples

Common Irish sentences using éifeachtacht, the Irish word for effectiveness.

Níl amhras ar bith faoi éifeachtacht an leighis seo.
There is no doubt about the effectiveness of this cure.
Tá an éifeachtacht ríthábhachtach i ngnó ar bith.
Efficiency is vital in any business.
Rinneadh staidéar ar éifeachtacht an fheachtais.
A study was done on the effectiveness of the campaign.
Tá ardleibhéal éifeachtachta ag an gcóras nua.
The new system has a high level of efficiency.
Chuir an traenáil go mór lena héifeachtacht san obair.
The training greatly improved her effectiveness at work.
Bhí éifeachtacht an vacsaín níos airde ná mar a ceapadh.
The vaccine's efficacy was higher than expected.
Ní mór dúinn éifeachtacht na seirbhíse a mhéadú.
We must increase the efficiency of the service.

Other nouns in Irish

More everyday Irish nouns to learn next.

Effectiveness in Irish: frequently asked questions

What is the Irish for effectiveness?

The Irish for effectiveness is éifeachtacht (pronounced “AY-fakh-tukht”). It’s a feminine noun. Depending on context it can also mean efficiency.

How do you pronounce éifeachtacht in Irish?

Éifeachtacht is said like “AY-fakh-tukht” (IPA /eːfʲəxt̪ˠəxt̪ˠ/).

Does éifeachtacht have a plural?

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

Does éifeachtacht have more than one meaning?

Yes. Éifeachtacht can mean effectiveness or efficiency, depending on context; the first is the most common.

Why does éifeachtacht sometimes have a t or h in front of it?

Irish nouns beginning with a vowel take a prefix after certain words: an éifeachtacht (the effectiveness), a héifeachtacht (her effectiveness), a n-éifeachtacht (their effectiveness).

What is the difference between éifeacht and éifeachtacht?

Éifeacht means 'effect' or 'force', while éifeachtacht is the abstract quality of being effective (éifeachtach), i.e. 'effectiveness' or 'efficiency'.

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