Dyed-in-the-wool and Keen as mustard

Dyed-in-the-wool adjective - Being such by habit and not likely to change.

Keen as mustard and dyed-in-the-wool are semantically related. in deep-dyed topic. In some cases you can use "Keen as mustard" instead an adjective phrase "Dyed-in-the-wool". informal substitute

Dyed-in-the-wool and keen as mustard are semantically related. Sometimes you can replace phrase "Dyed-in-the-wool" with "Keen as mustard", this phrases are similar.