AGRANDADOS plural of (SER) AGRANDADO, figuratively, a person who acts or shows having more importance or power than he really has. Literaly, means ENLARGED, EXTENDED Some synonyms, words or similar expressions can be enlarge, accentuate, extend
"Los muchachos son unos agrandados. Quieren pasar por dueños de los autos de sus padres. The kids are pretending. They are trying to make believe they are the owners of their parents' cars"