rökfræðilegri

rökfræðilegri is the dative singular feminine form of the Icelandic adjective "rökfræðilegur," which translates to "logical" in English. In Icelandic grammar, the dative case is used to indicate the indirect object of a verb, the object of certain prepositions, or to express a variety of other grammatical functions depending on the context. When an adjective modifies a feminine noun in the dative case, it takes the "-ri" ending. Therefore, "rökfræðilegri" specifically refers to something that is logical when it is the indirect object or in another dative construction involving a feminine noun. For example, in a sentence like "Ég gaf henni rökfræðilegri ástæðu" (I gave her a logical reason), "ástæðu" (reason) is a feminine noun in the dative case, and "rökfræðilegri" agrees with it in case, number, and gender. Understanding this inflection is crucial for correct Icelandic sentence construction and comprehension, as it demonstrates how grammatical case and gender agreement influence adjective forms.