Jack learned most languages he knows on account of wanting to better understand men and women he deeply admired who came through Shipwreck Cove. Though the most notable among them being Eduardo Villanueva, Don Rafael and Christophe-Julien de Rapièr who inspired him toward Spanish and French respectively, it was only Mistress Ching who taught him anything personally. She is downright his favorite Pirate Lord – but that relationship is its own headcanon entirely.

As his friend Cristophe was around more often, Jack was able to practice his French consistently among him and several other French pirates until he had a flawless beat to it. He was perfectly content with the fact Christophe insisted upon calling him Jacques and often worked to learn new phrases and idioms to surprise the man with whenever he was out.

Don Rafael on the other hand, did not have very much to do with Jack – but he was someone Jack wanted to better know, as he was a pirate lord of considerable renown and was ( generally ) quite kind. Eduardo had a great sense of humor, but not a particularly vast amount of patience – he spoke swiftly and Jack either kept up, or lost track. Generally speaking Eduardo stuck to English around Jack as he did not have the temperament for teaching or repeating himself.

Jack trips over his tongue fairly frequently with Spanish, so he speaks slowly more often than not; he can understand if it is fast up to a point. Once it gets too quick, he tends to interrupt with an unrelated question to slow things down once more. Of all the languages he knows, Jack adores Spanish the most ( French now leaves a bad taste in his mouth on account of Cristophe )

Just listening to Spanish in general used to warm his heart enormously, though with the losses of Don Rafael and Esmeralda it has become softly nostalgic and painful on account of the fact he never got good enough to really row with them in it, and he feels like if he gets better now it would be a disservice to the memories. A strange way of thinking, he knows – but he is a man who believes where sentiment can be afforded, it ought to be.