actividad
/aɡtibiˈdad/ · B1 · noun · f
action
activ(o) + -idad: active + -ity, the exact twin of English activity
Spanish -idad matches English -ity (ciudad aside): actividad/activity, realidad/reality, calidad/quality. From Latin activitas, from actus, a doing. Nouns ending in -dad are feminine: la actividad.