mudar
transitive verb
1. to change (cambiar); to move (casa)
cuando mude la voz -> when his voice breaks
2. to molt (piel, plumas)
intransitive verb
3. (cambiar)
mudar de -> to change; (opinión, color) to move (domicilio)
mudarse
pronomial verb
also:
mudarse (de casa) -> to move (house)
mudarse (de ropa) -> to change