Multiple variants of the name 'Mishaguji' exist such as 'Mishaguchi', 'Misaguchi', 'Misaguji', 'Mishakuji', 'Misakuji(n)', or 'Omishaguji'. There are also various ways of
rendering the name in
kanji such as 御左口神, 御作神, 御社宮神, or 御社宮司, with 御左口神 being the commonly used form in medieval documents penned by the Suwa Shrine priesthood. Outside Suwa, deities thought to be related to the Mishaguji with names such as '(O)shaguji', '(O)shagoji', '(O)sangūji', 'Sa(n)goji', 'Saguji', 'Shagottsan', 'Shagottan', 'Jogu-san', 'Osangū-san', 'Oshamotsu-
sama', or '
Oshamoji-sama' - with different ways of writing them in kanji - are found. The name's etymology is uncertain. During the early modern period when the Mishaguji were conflated with the divine children (
mikogami) of Takeminakata, the god of the Upper Suwa Shrine, the name was explained as being derived from the term
sakuchi (闢地, lit. 'to open up / develop the land'), which in turn was connected with legends that credit Takeminakata's offspring with forming and developing the
land of Shinano. The name has also been interpreted as deriving from
shakujin / ishigami (石神 'stone deity'), a term used for sacred stones or rocks that were worshiped as repositories (
shintai) of
kami (it has been observed that stones or stone items were employed as
shintai in many Mishaguji-related shrines), or
shakujin (尺神), due to another association with bamboo poles and measuring ropes used in
land surveying and
boundary marking. The term
sakujin (作神 'harvest / crop deity') has also been suggested as a possible origin.
Ōwa Iwao (1990) meanwhile theorized the name to be derived from
(mi)sakuchi (honorific prefix 御
mi- + 作霊, 咲霊
sakuchi), a spirit (
chi; cf.
ikazu-chi,
oro-chi,
mizu-chi) that brings forth or opens up (
saku, cf.
咲く 'to bloom',
裂く 'to tear open',
作 'to do/make/cultivate/grow';cf. also the verb
sakuru/
shakuru 'to dig/scoop up') the latent life force present in the soil or the female womb. ==Extent of cult==