WordNet: fall in, get together, join

become part of; become a member of a group or organization; "He joined the Communist Party as a young man"

• hyponym sign up

• hyponym band oneself, league together

• hyponym organise, organize, unionise, unionize

• hyponym affiliate

• hyponym rejoin

• hyponym infiltrate, penetrate

• hyponym unify, unite

fall in

• (suomi) ottaa paikkansa (synonyymi)

get together

• (suomi) kokoontua (synonyymi)

join

• (englanti) joiner (derivationally related)
• (suomi) liittyä (synonyymi)