The article under consideration dwells on the issue beset with comparative analysis of morphological peculiarities and the level of usage of subordinate compound adverbs (SCAs) on the example of the historical writings entitled as “Tuhfat-ul-khani” by Muhammadwafo Karminagi and “Zafar-Name” by Khusravi. It is noted that compound adverbs are divided into two sub-groups, namely coordinative and subordinate compound adverbs. The importance of the theme explored lies in comparison and consideration of morphological peculiarities of SCAs using comparative-historical and statistical methods, determination of their distinguishing peculiarities based on the scientific-historical writings, those ones included into the historical events of various families of 18th-19th centuries. Adducing the result of the comparative analysis beset with SCAs of the historical writings under study one can come to the conclusion that such kinds of adverbs are more frequently used in “Zafar-Name” by Khusravi than in “Tuhfat-ul-khani” by Muhammadwafo Karminagi.
