“Accessor” is an English word. Sure, it originates in computing, but that doesn't make it any less part of the language.
Even in English, "accessor" is a word that was rarely, if ever, used, before it was picked up in the programming languages jargon. So much that it has not made its way into some dictionaries, like Cambridge and Merriam-Webster.
fwiw, they have "default", in the computing sense of the preselected option, from 1966, while "by default" (in a legal context) has an example from 1764, "Where a defendant makes default, judgement shall be had against him by default."