Within the framework of this article, the stylistic expressions of the antonyms and antitheses extracted from in the collections of poems "Don't become illuminated" and "Footprints with watercolor" written by poet Ara Aloyan have been discussed. Their semantic fields and lexical groups, their use in the writer's poetry as a way of expressing the objective world, objects,
phenomena, poetic sentiments, feelings, emotions and thoughts have been studied.