Editing Causative (section)

====Irregular stem change====
English ''fell'' (as in "Paul felled the tree") can be thought of as a lexical causative of ''fall'' ("the tree fell"), exemplifying this category.<ref name=Payne/>{{rp|177}} This is considered a lexical change because it is not at all productive. If it were productive, it would be an internal change morphological causative (below).<ref name=Payne/>{{rp||178}}