In this paper, I intend to explore the influence of sentimentalism in the works of Gábor Dayka (1769-1796), a Hungarian poet, an author of sentimental poems imbued with the ideals of the Enlightenment.The sentimental tones of his verses derive first of all from being misunderstood and oppressed and from the impossibility of unveiling the opaque sadness of the mysterious melancholy.Dayka, forced to choose the ecclesiastical career and then abandon it because of his liberal ideas, gradually becomes a sentimental and pessimistic poet who thinks love is painful and projects his pain into nature.I will focus on the sentimental means of expression of Dayka from the poem titled Rettenetes éjszaka (Terrible Night) to Titkos bú (Mysterious Melancholy).