This study aims to examine the Korean language in the 18th and 19th centuries, based on an extensive review of the works by Ok Lee . The results of this study indicate that, first, Ok Lee was not concerned with the dominant literary style and thoughts of the times. Instead, he wrote about trivial subjects and composed poems from the perspective of women. Second, Lee had a great interest in language and his interest covered a quite wide range of words including the names of persons, snakes, horses, and fish. Third, his interest in what was considered trivial at the times spanned social and regional dialects such as slang, jargon, and Gyeongsang regional dialect. The three points are related to and influenced by his deep affection for the trivial.