dyed in the wool

unchanging in a particular belief or opinion; inveterate

徹頭徹尾的，十足的；根深蒂固的

she's a true blue dyed-in-the-wool Conservative.

她是個徹頭徹尾的保守黨分子。

of the deepest dye

Of the most extreme sort.

極端的：屬最極端類型的