old guard for learners of EnglishPowered by COBUILD
singular noun [with sing or pl verb]
If you refer to a group of people as the old guard, you mean that they have worked in a particular organization for a very long time and are unwilling to accept new ideas or practices. [disapproval] ⇒ The old guard did not like the changes that Brewer introduced. ⇒ He belongs to the ruling Nationalist Party's old guard.