The article focuses on adaptive hybrid verbs in Lithuanian slang which take the suffix -inti. Extracted from the Dictionary of Lithuanian Slang and Non-Standard Language, these verbs (96 originating in the Russian language and 46 borrowed from English) are distinguished from hybrid derivatives. The study shows that affixal adaptation is used in order to incorporate borrowed verbs into the Lithuanian linguistic system. Loan verbs adapted purely phonetically are rare in Lithuanian slang and tend to be used adverbially. Although semantically, borrowing can result in new meanings, many of these verbs are seen only as trendy non-standard variants. Some of the suffix -inti verbs are morphologically decomposable: they are derived from base words already adapted in the Lithuanian language. A small number of morphologically unanalysable verbs are also investigated. These loanwords are adapted using the derivative suffix -inti and following the principles of derivative analogy. Morphological adaptation of hybrids is achieved by replacing the derivative suffix of the donor language with the suffix of the recipient language.