In Spanish slang, 'agallado' often refers to someone who is bold, cheeky, daring or has a lot of nerve. It can also indicate someone who takes advantage of others.
Examples
- Spanish: No puedo creer que Juan se haya comido todo el pastel él solo. ¡Qué agallado!
- English: I can't believe Juan ate the whole cake by himself. What a cheeky guy!