únase

únase is the formal imperative form of the pronominal verb unirse in Spanish, used to tell someone in a respectful, singular address (usted) to join or unite with others. It conveys an invitation, instruction, or request to participate in an action, program, or organization.

The base verb unirse is a reflexive form built from unir (to unite, to join) with the reflexive suffix -se, meaning that the action is performed by the subject upon itself or in coordination with others. The imperative únase is theusted form, while the corresponding plural is únanse, used when addressing multiple people (ustedes). These forms are common in formal communications, official notices, signs, or any context requiring politeness.

Pronunciation centers on the stressed first syllable: Ú-nase, with the acute accent marking the emphasis. In speech, the final -se is pronounced as a syllable, producing a two-syllable or three-syllable word depending on regional pronunciation.

Usage notes include that únase can introduce a request to join a group, support a cause, participate in a program, or align with a plan. It is contrasted with tú forms like únete (informal singular), which are used in casual contexts. Examples: Únase a nosotros para mejorar la comunidad. (Please join us to improve the community.) Únanse al equipo para completar el proyecto.

See also: unirse, unión, unidad, imperativo, conjugación verbal.