þykkust

þykkust is the superlative form of the Old Norse adjective "þykkr," meaning thick or dense. In Old Norse grammar, the superlative suffix "-ust" is appended to the adjective stem to indicate the highest degree of the quality. Therefore, þykkust literally translates to "thickest" or "densest." This form would be used to compare three or more items and identify the one that possesses the greatest thickness or density. For example, one might say "Þetta tré er þykkust allra trjáa í skóginum," meaning "This tree is the thickest of all the trees in the forest." The use of the superlative is a common feature in many Indo-European languages, including Old Norse, and serves to express extremes of comparison. While Old Norse is no longer spoken as a native language, its grammatical structures and vocabulary, including forms like þykkust, are preserved in modern Scandinavian languages and provide insight into the historical development of these tongues. The concept of a superlative adjective remains fundamental to expressing comparative degrees of qualities in language.