This is the closest to “pantoglottism” (‘Knowledge of all languages’, OED) that we’re going to get. I wonder if there is anyone that really has it? Possibly not, which would explain why the word is obsolete. I think we should find a new meaning for it, as it is such a lovely word!
Day #59 of the second 365 project, where the daily pic is informed by the OED word of the day.