long-time

A person you have known and liked for a long time.

langjähriger Unterstützer

Someone who has supported a person, team, or idea for a long period.

jemand, der ein Team, eine Partei oder eine Sache seit vielen Jahren unterstützt

A person you have worked with or been connected to for a long time.

A person or country that has provided support and help over a long period.