ˌdyed-in-the-ˈwool BrE AmE adjective
having strong beliefs, likes, or opinions that will never change:
Even dyed-in-the-wool traditionalists were impressed by the changes.
ˌdyed-in-the-ˈwool BrE AmE adjective
having strong beliefs, likes, or opinions that will never change:
Even dyed-in-the-wool traditionalists were impressed by the changes.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012