Though one other thing; yes we find verbs listed in the first person singular in dictionaries, but native speakers of Latin and those who only spoke/wrote in it as an academic necessity until the 19th century did not use the 1st person singular for the concept of the word itself. The concept itself would have been “titiare,” e.g. “Titiare est humanum.” So, presumably, Twitter would be “Titiare” rather than “Titio.”