From ny +‎ danne.

nydanne (imperative nydann, present tense nydanner, passive nydannes, simple past and past participle nydanna or nydannet, present participle nydannende)

1. to create
2. to coin (a new word)
3. to reconstruct

• “nydanne” in The Bokmål Dictionary.
• “nydanne” in Det Norske Akademis ordbok (NAOB).