The culture and worldview of society find their reflection in its language. Language reflects the culture, is influenced by it, and, is shaped accordingly. In its broadest sense, culture is the symbolic representation of a people as it includes the historical and cultural background of a people, its approach to life, its and way of living and thinking. The development of a society's language and culture is directly proportional to the breadth of its vocabulary. Because vocabulary contains the material and spiritual cultural heritage of a society, that is, it contains the codes of that society because it emerges by feeding on language and culture. Therefore, revealing the presence of a society's vocabulary is of great importance both in terms of language and culture. The priorities of the society, the concepts that it values, and that have importance in its culture have more terminological equivalents than other concepts. The word “aqıl”, which is the subject of this study, reveals the importance that Kazakh society attaches to reason with its wide range of uses. In the study, words derived from the word “aqıl” in Kazakh Turkish (nouns, adjectives, and verbs), synonyms of words derived from the word “aqıl”; reduplications, idioms, proverbs, and riddles made with the word “aqıl” were discussed in detail and thus, it was tried to reveal how developed in that language of a word entered from Arabic to Kazakh Turkish.