dyed-in-the-wool

US /ˌdaɪd.ɪn.ðəˈwʊl/
UK /ˌdaɪd.ɪn.ðəˈwʊl/
"dyed-in-the-wool" picture
1.

골수, 철저한

having very strong beliefs, opinions, or habits that are not likely to change

:
He's a dyed-in-the-wool conservative.
그는 골수 보수주의자다.
She's a dyed-in-the-wool optimist, always seeing the bright side.
그녀는 골수 낙천주의자라서 항상 밝은 면을 본다.