preocupar
/pɾeokuˈpaɾ/ · A1 · verb
to worry, to concern, to trouble, to be worrisome to, to preoccupy
pre + ocupar: worry occupies your head before anything happens
From Latin praeoccupare, to seize beforehand. A worry takes over your thoughts ahead of time, same root as English preoccupy. Me preocupa = it worries me; preocuparse por = to worry about.