Bolivian Spanish word
usted (en el altiplano)
Meaning: the polite 'you', the highland default
How it is used in Bolivia
Around La Paz and the lake, people speak usted, not the vos of Santa Cruz. With a highland driver or boatman, '¿vos cruzás?' sounds out of place; 'disculpe' plus usted is the register that fits.
Learn it in a real situation
Explore Lake Titicaca and Copacabana, Practical Spanish