The Irish for 'luck' is 'ádh'in Irish its 'adh' (pr. 'aw')or 'an t-adh' (pr. 'on taw')If you want to say good luck to a person you say 'go n-éirí an t-adh leat' (pr. 'guh nie-ree on taw lat')
ádh mór ort (singular)ádh mór oraibh (plural)
Caidé mar atá an leannán anocht? (Ulster Irish)
"Anocht" is tonight. "Oíche", pronounced ee-ha, is night.
Because they just do!
Ádh mór ort a mhamó / Go n-éirí leat a mhamó
To say "good luck" in Polish, you would say "powodzenia."
àdh (luck), cinniùint (fate), maoin (wealth)
Irish can speak English. So you can stick with that is you want to.
Kia manuia - Good luck
Irish luck is "la chance irlandaise" in French. Now that seems to carry another meaning (see realted question), so if you mean bad luck, this is "la malchance".
good luck- powodzenia