Fræðilegar
Fræðilegar is an Icelandic adjective meaning scholarly or academic, used to describe things that relate to knowledge, science, or theoretical inquiry. The form fræðilegar is the feminine plural ending of the adjective fræðilegur. In Icelandic, adjectives agree in gender and number with the nouns they modify, so fræðilegar appears before feminine plural nouns such as heimildir or kenningar.
The root of the term is fræði, meaning knowledge, science, or learning. The suffix -legr creates adjectives
Common usages include phrases such as fræðilegar heimildir (scholarly sources), fræðilegar kenningar (scholarly theories), and fræðilegar