Acercáos
Acercáos is the second-person plural affirmative imperative of the reflexive verb acercarse in Spanish, used to tell a group of people to come closer. It combines the verb stem acerc- with the reflexive pronoun os, and is typically used in informal speech in Spain, where the vosotros form is common. In many Latin American varieties, ustedes would be used instead of vosotros, yielding no direct equivalent in this form.
In standard orthography, the form is commonly written as acercaos, though variants with the accent used to
Negative imperatives for vosotros use a different construction, generally formed with the present subjunctive: No os
Regional and stylistic notes: acércate, acérquense, and related forms exist for tú and ustedes, while vosotros