From Old Norse jóll, jóli, whence also Faroese jólur, Norwegian Nynorsk jol, from Proto-Germanic *eulaz. The initial n seems to be derived from the compound hvannjóli, from hvǫnn (“angelica”) + jóli, which is attested in Fóstbrœðra saga. Related to auli, Norwegian aul, aule (“hollow plant stem”); also to Ancient Greek αὐλός (aulós), Lithuanian aũlas.
njóli m (genitive singular njóla, nominative plural njólar)
| Declension of njóli | ||||
|---|---|---|---|---|
| m-w1 | singular | plural | ||
| indefinite | definite | indefinite | definite | |
| nominative | njóli | njólinn | njólar | njólarnir |
| accusative | njóla | njólann | njóla | njólana |
| dative | njóla | njólanum | njólum | njólunum |
| genitive | njóla | njólans | njóla | njólanna |