The Holy Qur’anic text contains advanced aesthetic values and discovering its subtleties by means of systemic methods of modern linguistic theories confirms its superior miraculous aspects. Focusing on "literariness", Russian formalists sought to recognize the criteria for beautifying texts and found a number of techniques such as deviation as its creator. Deviation has extensively been used in the Qur’anic text at various morphological, syntactic, rhetorical, phonological levels, creating magnificent expressional manifestations. Muslim linguists have each pointed to an aspect of these deviations. Nevertheless, studying the Qur’anic text from the perspective of deviation can more consistently reveal the glory of the literariness of the Qur’anic text. The present descriptive-analytical paper thus, besides presenting a theoretical account of the topic, explored the semantic dimension of morphological deviation in the texts of Surah al-Anām and Surah al-A'raf. Through comparing deviated instances, the authors tried to find out how the given Qur’anic expressions, via morphological deviation as a literary device for adding to the semantic content, have put on a wide range of semantic elegances to the text that could not be automatically created by the old structures. The results of this study includes the fact that morphological deviation unveils hidden points in the Qur’anic text that have been left unexplained by old exegetes because they justified them under titles such as syntactic fate and giving attention to the indirect meaning (haml bar ma'na).