Agder

Proper noun

 * , formed on 1 January 2020 on the merger of and  counties.

Etymology
From, from a singular form , from , from the root. Cognate with 🇨🇬, 🇨🇬, and 🇨🇬 (> 🇨🇬).

Proper noun

 * , until 2020 split into Aust-Agder and Vest-Agder
 * , until 2020 split into Aust-Agder and Vest-Agder

Usage notes
The traditional preposition for is ; though  has become more common in modern time when referring to the county.