joined
"Joined" is the past tense and past participle of the verb "join." It has a few closely related but distinct meanings, all revolving around the idea of connecting, combining, or becoming part of something. Here are the most common ones.
When you joined in something — like a conversation, a game, or a celebration — you started participating in it together with other people.
everyday language · Modern, widely used
He was shy at first but eventually joined the discussion.
The whole crowd joined the celebration in the street.