In Turkish, there are at least three different morphological classes of roots regarding the forms of the adjective and the related verbs. Class 1 shows an invariant root, e.g. kısa, the comparative marker daha, the inchoative suffix -l and the causative -t. Classes 2 and 3 have adjectives ending with -k. These have been argued to be bimophemic, taking the consonant to be a separate functional head (Atlamaz and Dikmen2024, Turk 2020). Interestingly, this consonant disappears in the verbal forms both in Class 2 and 3. This is unexpected in view of the proposal by Bobaljik (2012), who proposes that deadjectival verbs build on the comparative, which embeds the (positive-degree) adjective. Class 2 and 3 differ in the morphology of the causative, where Class 3 lacks not only the adjectival -k, but also any verbalizing morphology. We show how Nanosyntax handles the puzzle of the unexpectedly disappearing markers, using the idea of phrasal lexicalization.