1af·fil·i·ate 
/əˈfɪliˌeɪt/ verb
af·fil·i·ates; af·fil·i·at·ed; af·fil·i·at·ing /əˈfɪliˌeɪt/ verb [+ obj] : to closely connect (something or yourself) with or to something (such as a program or organization) as a member or partner
▪ Their group does not affiliate itself with/to any political party. — often used as (be) affiliated ▪ Their group is not affiliated with/to any political party. ▪ The medical school is affiliated with/to several hospitals.
▪ Their group does not affiliate itself with/to any political party. — often used as (be) affiliated ▪ Their group is not affiliated with/to any political party. ▪ The medical school is affiliated with/to several hospitals.
— affiliated adjective
▪ the medical school and its affiliated hospitals ▪ the television network's affiliated stations
▪ the medical school and its affiliated hospitals ▪ the television network's affiliated stations
