4dn. Agreed to don rotten cheat's pirate garb? (8)
I have E-E-A-C- which fits 'elegance' or 'elegancy', but I can't see any explanation for the word play.
If the first E is wrong, it could be 'seecatch', which is seal fur. Did pirates wear this? It's an anagram of 'cheats' and 'ec', but I'm sure it's a dead end - my brain hurts - help, please!