To get (another's help, support, aid, etc.)
To come together; to meet.
To volunteer is defined as to give without being asked and without being paid.
Find another word for join-up. In this page you can discover 6 synonyms, antonyms, idiomatic expressions, and related words for join-up, like: enlist, sign up, enter the armed forces, respond to the call of duty, join and volunteer.