Iontráil sa Lámhscríbhinn: 
Ciall nó Míniú (BÉARLA): 
one, a single one, the only
Sampla(í) Úsáide: 
With neg, non Aon is fiche, twenty-one.  Gach aon duine, everyone.  Níl aon phínginn airgid agam, I have no money [But níl airgead ar bith agam] Aon uair amháin, once, once upon a time.