Pre-Greek substrate

The pre-Greek substrate (or substratum) consists of the unknown pre-Greek language or languages (either Pre-Indo-European or other Indo-European languages) spoken in prehistoric Greece prior to the emergence of the Proto-Greek language in the region c. 3200–2200 BC, during the Early Helladic period. About 1,000 words of Greek vocabulary cannot be adequately explained as derivatives from Proto-Greek or Proto-Indo-European, leading to the substratum hypothesis. According to scholars, Ancient Greek was likely influenced by two types of substrates: one Indo-European, probably an unknown Anatolian language that has been called "Parnassian", and one or several non-Indo-European languages that pre-date the coming of Greeks to the region.