þroskuðust
þroskuðust is the past tense plural form of the Icelandic verb þroskast, which translates to "to mature" or "to ripen." In the context of language, it signifies that a group of subjects underwent a process of maturation or development. This could refer to people, plants, or abstract concepts that have reached a more developed or complete stage. For example, one might say "börnin þroskuðust á einu ári" meaning "the children matured in one year." Similarly, in agriculture, it could describe fruit that ripened collectively. The word emphasizes the completion of a developmental phase for multiple entities. The root of the verb, þroski, refers to maturity, growth, or ripeness. Therefore, þroskuðust implies a completed action of reaching a mature state by more than one individual or item. It is a common verb used to describe natural processes of growth and development in the Icelandic language. The suffix "-uðust" indicates the past tense and plural form of the verb.