What are synonyms of the word goodbye?

Here are some synonyms for "goodbye," depending on the context and tone you want to convey:

Formal:

* Farewell

* Adieu

* So long

* Cheerio (British)

* Until we meet again

Informal:

* Later

* See ya

* Catch you later

* Take care

* Peace out

* Have a good one

* Be seeing you

Emotional:

* Fond farewell

* Heartfelt goodbye

* Best wishes

* Take care of yourself

Other:

* Departure

* Parting

* Leaving

* Separation

The best synonym to use will depend on the specific situation and the relationship between the people saying goodbye.