referred to as "fauns". Terminology The etymology of the term satyr (, ) is unclear, and several different etymologies have been proposed for it, including a possible Pre-Greek origin. Some scholars have linked the second part of name to the root of the Greek word θηρίον (thēríon), meaning "wild animal". This proposal may be supported by the fact that Euripides at one point refers to satyrs as theres. Another proposed etymology derives the name from an ancient Peloponnesian word meaning "the full ones", alluding to their permanent state of sexual arousal. Eric Partridge suggested that the name may be related to the root sat-, meaning "to sow", which has also been proposed as the root of the name of the Roman god Saturn. Satyrs are usually indistinguishable from silenoi, whose iconography is virtually identical. According to Brewer's Dictionary of Phrase and Fable, the name "satyr" is sometimes derogatorily applied to a "brutish or lustful man". The term satyriasis refers to a medical condition in males characterized by excessive sexual desire. It is the male equivalent of nymphomania. Origin hypotheses Indo-European According to classicist Martin Litchfield West, satyrs and silenoi in Greek mythology are similar to a number of other entities appearing in other Indo-European mythologies, indicating that they probably go back, in some vague form, to Proto-Indo-European mythology. Like satyrs, these other Indo-European nature spirits are often human-animal hybrids, frequently bearing specifically equine or asinine features. Human-animal hybrids known as Kiṃpuruṣas or Kiṃnaras are mentioned in the Rāmāyaṇa, an Indian epic poem written in Sanskrit. According to Augustine of Hippo (354 – 430 AD) and others, the ancient Celts believed in dusii, which were hairy demons believed to occasionally take human form and seduce mortal women. Later figures in Celtic folklore, including the Irish bocánach, the Scottish ùruisg and glaistig, and the Manx goayr heddagh, are part human and part goat. The lexicographer Hesychius of Alexandria (fifth or sixth century AD) records that the Illyrians believed in satyr-like creatures called Deuadai. The Slavic lešiy also bears similarities to satyrs, since he is described as being covered in hair and having "goat's horns, ears, feet, and long clawlike fingernails." Like satyrs, these similar creatures in other Indo-European mythologies are often also tricksters, mischief-makers, and dancers. The lešiy was believed to trick travelers into losing their way. The Armenian Pay(n) were a group of male spirits said to dance in the woods.