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Knapsack in Irish (Cnapsac): Meaning, Pronunciation, Usage

The Irish for knapsack is cnapsac, a masculine noun (plural cnapsaic).
Updated October 2026Report a mistake

How to say “knapsack” in Irish

Irish:
cnapsac
English:
knapsack
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“KNAP-suk”  /ˈkn̪ˠapˠsˠək/
Various forms
Plural:
cnapsaic (knapsacks)
Genitive singular:
cnapsaic, an chnapsaic (e.g. póca an chnapsaic, the pocket of the knapsack)
Genitive plural:
cnapsac, na gcnapsac (e.g. strapaí na gcnapsac, the straps of the knapsacks)

What does “cnapsac” mean?

knapsack
A bag carried on the back, used for carrying things when walking, hiking or going to school.Also: rucksack, backpack, haversack.

“Cnapsac” with the article

The plural of knapsack in Irish is cnapsaic. Here is cnapsac after the article (an t-alt), in the singular and the plural.

an cnapsac
the knapsack
No change after an
na cnapsaic
the knapsacks
Plural: no change after na

“Cnapsac” in a sentence: Irish examples

Common Irish sentences using cnapsac, the Irish word for knapsack.

Tá cnapsac nua agam don scoil.
I have a new backpack for school.
Cuir an cnapsac ar do dhroim.
Put the knapsack on your back.
Tá mo chnapsac róthrom inniu.
My rucksack is too heavy today.
Chuir sé an bia sa chnapsac.
He put the food in the knapsack.
Bhí cnapsaic ar na siúlóirí go léir.
All the walkers had rucksacks.
Tá an léarscáil i mo chnapsac.
The map is in my backpack.
D'fhág mé an buidéal uisce sa chnapsac.
I left the water bottle in the knapsack.

Other nouns in Irish

More everyday Irish nouns to learn next.

Knapsack in Irish: frequently asked questions

What is the Irish for knapsack?

The Irish for knapsack is cnapsac (pronounced “KNAP-suk”). It’s a masculine noun and the plural is cnapsaic.

How do you pronounce cnapsac in Irish?

Cnapsac is said like “KNAP-suk” (IPA /ˈkn̪ˠapˠsˠək/).

What is the plural of knapsack in Irish?

The plural of cnapsac is cnapsaic; with the article, na cnapsaic means “the knapsacks”. The genitive plural is cnapsac, as in strapaí na gcnapsac (the straps of the knapsacks).

Why does cnapsac change to chnapsac or gcnapsac?

Irish changes the start of some words after certain words. After mo (my) cnapsac becomes mo chnapsac (lenition), and after ár (our) or i (in) it becomes ár gcnapsac (eclipsis).

Is 'cnapsac' the only Irish word for a school bag?

No, 'mála scoile' is also very common for a school bag, while 'cnapsac' is any bag carried on the back, like a rucksack.

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