Nahj al-balagha is second epistemological source of Islam. This excellent manuscript in addition to ideological function that is concerned with its context, because of rhetoric and aesthetic value has literature function too. This latter trait is because of presence of elements such as usage of additional verbs for creating implications correspondent by situations. This article by title “survey of practical implications of additional verbs (efaal, tafeel and mofaele) in Nahj al-balagha” is a theoretical research with an analytical-descriptive method that surveyed instances of additional verbs by use of verbal sources and interpretations of Nahj al-balagha on practical implications of additional verbs. Researcher by analyzing data concluded: first: additional verbs in Nahj al-balagha have the most implications and efaal and tafeel are used predominantly. Second: practical implications of additional verbs implies capacity of Arabic language in making new words from one source and development of realm of implications. Third, practical implications of additional verbs are accord with conditions and aims of sermons, letters and aphorism