Correct spelling for the English word "agur" is [ˈaɡə], [ˈaɡə], [ˈa_ɡ_ə] (IPA phonetic alphabet).
The word "agur" is derived from the Basque language. It is the Basque word for "goodbye" or "farewell". The exact origin and etymology of the word in Basque, however, is unclear. It is a commonly used word in the Basque Country, which is an autonomous community in northern Spain and southwestern France.