To join in or form a league, union, or association.

To spend time socially; keep company.

"She associates with her coworkers on weekends."

(with with) To join as a partner, ally, or friend.

"He associated his name with many environmental causes."

To connect or join together; combine.

"particles of gold associated with other substances"

To connect evidentially, or in the mind or imagination.

(in deliberative bodies) To endorse.

To be associative.

To accompany; to be in the company of.

(of a person or thing) connected with something or another person.

"an associated member"

(of a company) connected or amalgamated with another company.