dyed-in-the-wool

American  

[dahyd-n-thuh-wool] / ˈdaɪd n ðəˈwʊl /

adjective

1. through and through; complete.

   a dyed-in-the-wool reformer.

2. dyed before weaving.

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dyed-in-the-wool British  

adjective

1. extreme or unchanging in attitude, opinion, etc

2. (of a fabric) made of dyed yarn

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dyed-in-the-wool Cultural  

1. Thoroughgoing or complete: “The door-to-door salespeople are wasting their time with Evans; he's a dyed-in-the-wool advocate of shopping on the Internet.”

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Etymology

Origin of dyed-in-the-wool

First recorded in 1570–80