Romani people
Most Romani speak one of several dialects of the Romani language, an Indo-Aryan language, with roots in Sanskrit. They also often speak the languages of the countries they live in. Typically, they also incorporate loanwords and calques into Romani from the languages of those countries and especially words for terms that the Romani language does not have. Most of the "Ciganos" of Portugal, the Gitanos of Spain, the Romanichal of the UK, and Scandinavian Travellers have lost their knowledge of pure Romani, and respectively speak the mixed languages Caló, Angloromany, and Scandoromani. Most of the speaker communities in these regions consist of later immigrants from eastern or central Europe.
Romance languages
"au" merged with "ō" in the popular speech of Rome already by the 1st century . A number of authors remarked on this explicitly, e.g. Cicero's taunt that the populist politician Publius Clodius Pulcher had changed his name from "Claudius" to ingratiate himself with the masses. This change never penetrated far from Rome, however, and the pronunciation /au/ was maintained for centuries in the vast majority of Latin-speaking areas, although it eventually developed into some variety of "o" in many languages. For example, Italian and French have as the usual reflex, but this post-dates diphthongization of and the French-specific palatalization > (hence "causa" > French "chose", Italian "cosa" not **"cuosa"). Spanish has , but Portuguese spelling maintains , which has developed to (and still remains as in some dialects, and in others). Occitan, Romanian, southern Italian languages, and many other minority Romance languages still have . A few common words, however, show an early merger with "ō" , evidently reflecting a generalization of the popular Roman pronunciation: e.g. French "queue", Italian "coda" , Occitan "co(d)a", Romanian "coadă" (all meaning "tail") must all derive from "cōda" rather than Classical "cauda" (but notice Portuguese "cauda"). Similarly, Portuguese "orelha", French "oreille", Romanian "ureche", and Sardinian "olícra", "orícla" "ear" must derive from "ōric(u)la" rather than Classical "auris" (Occitan "aurelha" was probably influenced by the unrelated "ausir" < "audīre" "to hear"), and the form "oricla" is in fact reflected in the Appendix Probi.