In the Dutch language itself, "Diets(c)" (later "Duyts") was used as one of several Exonym and endonyms. As the Dutch increasingly referred to their own language as "Nederlandsch" or "Nederduytsch", the term "Duytsch" became more ambiguous. Dutch humanists, started to use "Duytsch" in a sense which would today be called "Germanic". Beginning in the second half 16th century, the nomenclature gradually became more fixed, with "Nederlandsch" and "Nederduytsch" becoming the preferred terms for Dutch and with "Hooghduytsch" referring to the language today called German. Initially the word "Duytsch" itself remained vague in exact meaning, but after the 1650s a trend emerges in which "Duytsch" is taken as the shorthand for "Hooghduytsch". This process was probably accelerated by the large number of Germans employed as agricultural day laborers and mercenary soldiers in the Dutch Republic and the ever increasing popularity of "Nederlandsch" and "Nederduytsch" over "Duytsch", the use of which had already been in decline for over a century, thereby acquiring its current meaning (German) in Dutch.