dia daoibh, just watching wimbeldon on tg4 and i keep hearing "on-son" im guessing its a different way of saying "ansin", am i right here or am i hearing things?

'maith agaibh

Yes, that sounds like Munster pronunkiation: on/un-son = un-shin.

Though for all I know about the Munster dialect, it could be 'love-40'

Thats right its spelled ''ansan'', they also say anso for ''anseo''.

or atso

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