Definition
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rún
Rún is éard atá ann ná eolas nó faisnéis atá gafa nó i bhfolach ó dhaoine eile.
A secret is information or knowledge that is kept hidden or concealed from others.
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Tá rún ag an gcailín a dhéanann sí nach bhfuil a fhios ag a cara.
The girl has a secret that her friend does not know.
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Dúirt sé liom rún a choinneáil go dtí an lá mór.
He told me to keep the secret until the big day.
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Is rún é nach féidir le haon duine a nochtadh.
It is a secret that no one can reveal.