aðilanum
Aðilanum is the dative singular definite form of the Icelandic noun aðili, which means "party," "participant," or "entity involved in a relation." The base word aðili denotes a person or organization taking part in an action, agreement, or dispute. In formal Icelandic, especially in legal, contractual, and business contexts, aðili is used to refer to a party to an agreement, dispute, or transaction.
Grammatical note: Icelandic nouns are declined for case and number. þAðilanum is the dative singular definite
Origin and usage: The word is native to Icelandic and is widely used in both legal texts