古典ラテン語
One key marker of whether a given Romance feature was found in Vulgar Latin is to compare it with its parallel in Classical Latin. If it was not preferred in Classical Latin, then it most likely came from the undocumented contemporaneous Vulgar Latin. For example, the Romance for "horse" (Italian , French , Spanish , Portuguese and Romanian ) came from Latin . However, Classical Latin used . Therefore, was most likely the spoken form.