1. "Goodnight" - This is the most common way to say goodnight in English, and it is also widely used in Ireland.
2. "Go n-éirí an bóthar leat" - This is an Irish language phrase that literally translates to "May the road rise with you." It is a common way to wish someone a safe journey and peaceful night.
3. "Codladh sámh" - Pronounced "co-lah saav," this phrase means "peaceful sleep" in Irish. It is used as a more poetic and heartfelt way of saying goodnight and wishing someone a restful sleep.
4. "Oíche mhaith" - Pronounced "ee-hah vaa," this is the direct Irish translation for "goodnight" and is commonly used in Ireland. It is a simple but sincere way of bidding farewell for the evening.