acoplado

tagging along, joining a group or plan uninvited.; coupled, attached, connected.

“Al final vino al cine de acoplado porque no tenía otro plan.” — In the end he came to the movies tagging along because he didn't have any other plans.

Past participle of acoplar (“to couple, to attach”). Equivalent to acoplar + -ado. The colloquial social meaning is a metaphor: just as a trailer is hitched to a vehicle, an acoplado is a person who attaches themselves to a social group, event, or couple, often without a direct invitation.

a tagalong, a gatecrasher, a hanger-on, a third wheel (someone who joins a gathering, group of friends, or couple without being explicitly invited).

“No soporto al novio de Marta, es un acoplado y siempre viene a nuestras cenas.” — I can't stand Marta's boyfriend, he's a hanger-on and always comes to our dinners.

Past participle of acoplar (“to couple, to attach”). Equivalent to acoplar + -ado. The colloquial social meaning is a metaphor: just as a trailer is hitched to a vehicle, an acoplado is a person who attaches themselves to a social group, event, or couple, often without a direct invitation.