tallfestinga is the feminine singular definite of tallfesting.

tallfestingN

North Sámi

deaddolohkuN

Norsk-nordsamisk ordbokdict-nob-sme/src/N_nobsme.xml:185962Edit on GitHub Suggest

Case	Sg	Pl
Indef	tallfesting	tallfestinger
Def	tallfestingen / tallfestinga	tallfestingene