This text analyzes the Greek term 'deontos,' which translates as appropriately, suitably, or in a manner that is becoming. The author focuses on the etymological and semantic significance of this adverb within the context of Classical Greek and its practical application in philosophical or linguistic discourse. A significant element of the entry is the phrase 'pro tou deontos,' which refers to an action or event occurring before the necessary or appointed time. The document, dated in Pisek in February 2001, provides a brief yet factual insight into the terminology associated with the concepts of propriety and temporal urgency. The text serves as a lexicographical note exploring the subtle nuances of Greek morphology and syntax. Despite its brevity, it offers a valuable foundation for understanding how ancient Greek handled categories of normativity and temporality, concepts that are crucial for the later development of deontological ethics and logic in Western thought.