 Complete the following phrase:  Since neither nor was a native sound in Latin, the tendency must have emerged early, and at the latest by medieval Latin, to substitute . Thus, in many modern languages, including French and German, the digraph is used in Greek loan-words to represent an original , but is now pronounced : examples are French théâtre, German Theater. In some cases, this etymological , which has no remaining significance for pronunciation, has been transferred to words in which there is no etymological justification for it. For example, German Tal valley, cognate with English dale appears in many place-names with an archaic spelling Thal contrast Neandertal and Neanderthal. The 