preocupar

(transitive) to worry, to concern, to trouble, to be worrisome to, to preoccupy Me preocupa que esos muchachos estén afuera. ― It worries me that those guys are outside. Su silencio me preocupa, Doctor. ― Your silence troubles me, Doctor. A la novia de Juan no la preocupaba el chihuahua hasta que empezó a morderle los pies.The chihuahua didn't worry Juan's girlfriend until it started biting her feet.

(reflexive) to fret, to worry about/over, to be worried about/over, to be concerned about/over, to be troubled about/over, to care about (+ por usually, + de occasionally) Sabes, también me preocupo por ella. ― I care about her too, you know. No te preocupes por los detalles. ― Don't worry about the details. Me preocupo de que esos muchachos están afuera. ― I'm concerned about those guys being outside. La novia de Juan no se preocupaba del chihuahua hasta que empezó a morderle los pies.Juan's girlfriend wasn't worried about the chihuahua until it started biting her feet.