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Instructive in Irish (teagascach): Meaning, Forms, Examples

The Irish for instructive is teagascach: leabhar teagascach, an instructive book.
Updated October 2026Report a mistake

How to say “instructive” in Irish

Irish:
teagascach
English:
instructive
Word type:
adjective
More instructive:
níos teagascaí
Most instructive:
is teagascaí
Plural:
teagascacha
Pronunciation:
“TYAG-us-kukh”  /tʲaɡəskəx/

What does “teagascach” mean?

instructive
Giving useful teaching or information that helps you learn.Also: educational, didactic, informative.

Other Irish adjectives for instructive: oideachasúil (educational)

“Teagascach” after a noun

An Irish adjective comes after its noun. Here is teagascach after leabhar (book, masculine), after comhairle (advice, feminine) and after a plural.

after a masculine nounleabhar teagascachan instructive book
after a feminine nouncomhairle theagascachinstructive advice
after a plural nounleabhair theagascachainstructive books

séimhiú (the h) the ending

feminine
comhairleadvice
+
teagascachinstructive
=
comhairle theagascachinstructive advice

After a feminine noun the adjective gets a séimhiú, an h after its first letter: comhairle theagascach. After a masculine noun it stays as it is: leabhar teagascach.

plural
leabhairbooks
+
teagascachainstructive, plural
=
leabhair theagascachainstructive books

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

More instructive, most instructive, very instructive

níosmore
+
teagascaíinstructive
=
níos teagascaímore instructive
ismost
+
teagascaíinstructive
=
is teagascaímost instructive

Bhí an dara léacht níos teagascaí ná an chéad cheann. The second lecture was more instructive than the first.

more instructiveníos teagascaíin the past tense: ní ba theagascaí
most instructiveis teagascaíin the past tense: ba theagascaí
as instructive aschomh teagascach leno change after chomh
very instructivean-teagascachan- lenites, except d, t and s
too instructiverótheagascachró- lenites

“Teagascach” in a sentence: Irish examples

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

Léigh mé leabhar teagascach faoin stair.
I read an instructive book about history.
Thug sí caint theagascach don rang.
She gave an instructive talk to the class.
Bhí na cláir theagascacha sin an-mhaith.
Those educational programmes were very good.
Bhí an dara léacht níos teagascaí ná an chéad cheann.
The second lecture was more instructive than the first.
Tá an scannán seo an-teagascach.
This film is very instructive.

Other adjectives in Irish

More everyday Irish adjectives to learn next.

Instructive in Irish: frequently asked questions

What is the Irish for instructive?

The Irish for instructive is teagascach (pronounced “TYAG-us-kukh”). It comes after the noun: leabhar teagascach, an instructive book; comhairle theagascach, instructive advice.

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

níos teagascaí is more instructive and is teagascaí is most instructive. In the past tense they become ní ba theagascaí and ba theagascaí.

Why does teagascach become theagascach?

After a feminine singular noun an adjective is lenited: it gets an h after its first letter. So comhairle theagascach (instructive advice) but leabhar teagascach (an instructive book), because leabhar is masculine.

What is the plural of teagascach?

With a plural noun teagascach becomes teagascacha: leabhair theagascacha, comhairlí teagascacha. After a plural that ends in a slender consonant it is lenited as well.

How do you say very instructive in Irish?

an-teagascach. Too instructive is rótheagascach, and as instructive as is chomh teagascach le.

What is the difference between teagascach and oideachasúil?

Both can mean educational, but teagascach stresses teaching or instruction (from teagasc), while oideachasúil is the more usual word for educational, as in clár oideachasúil.

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