Abstract. We argue for a unified account of head movement and lowering in which lowering is in essence the covert movement counterpart of head movement. This proposal is supported by the existence of successive cyclic lowering (evidenced by relative prefix formation in Ndebele), in which complex heads built by lowering have the Mirror-Principle-obeying structure expected under a head movement derivation. It also predicts that lowering can feed head movement, giving the appearance of long head movement, which we argue is the case in Mainland Scandinavian V2. Keywords. head movement; lowering; Mirror Principle; Head Movement Constraint; V2; ellipsis; do-support; relative clauses; vowel coalescence; Ndebele; Danish 1. Introduction. Since at least Emonds 1970, two similar types of movements relating head positions (terminal nodes) have been distinguished in the literature. Their differences can be illustrated with the distribution of finite lexical (nonauxiliary) verbs in French and English. While in the former V moves out of VP to a higher (c-commanding) head position hosting finite inflection (represented here as T), lexical V in English stays in situ, and instead T lowers into V's VPinternal position, 1 as diagnosed, for instance, by the relative position of the finite verb with respect to adverbs adjoined to the left of VP (Chomsky 1957, Emonds 1970:211-226, 1978:65-68, Pollock 1989: 2