Ainu Morpheme Explorer
All place names

門別 もんべつ Monbetsu

Monbetsu, Hidaka town, Hidaka region, Hokkaidō

Ainu spellings: Mo-pet

One of the most frequent river names in Hokkaidō, usually written with an n in the records that the reading itself does not carry.

Location

42.4796, 142.0727 · Coordinates: OpenStreetMap Nominatim, 2026-09-10, on 門別. Open in OpenStreetMap

Readings in the place-name tables: モペッ Mo-pet

Referents

  • settlement Monbetsu, formerly Monbetsu town of Saru county, where the Hidaka town office now stands. The station and interchange are called Hidaka-Monbetsu to keep it apart from the other Monbetsu
  • river The Hidaka-Monbetsu River

Analyses

mo-pet

モベツ ‘quiet river’ received reading
  • mo ‘quiet’
  • pet ‘river’

Proponent: 定説

Names of this shape are numerous in Hokkaidō, more than ten of them still in use: Monbetsu in Saru county and in Shin-Hidaka and Samani, Monbetsu city, Monbetsu in Chitose, Date, Oshamanbe and Hiroo, Mobetsu in Monbetsu city and in Mukawa, and Mobetsu in Hokuto, known as Hokuto-Mohechi. The author notes that a great many of them are recorded with an n and asks whether the closing of the lips before p made it easy to hear one there, adding that the Ainu n is weak and appears and disappears.

Confidence: low

Both parts are dictionary words in the senses used and the reading is repeated across many places. The article reports the reading and gives no test of it against this river.

zenibako_trek… 「門別(もんべつ)」

Mo-pet

‘Slow river’ proposed
  • Mo ‘slow, quiet’
  • pet ‘river’

Proponent: John Batchelor

The entry does not say which Mombetsu it describes.

Variants

  • Mopet kotan ‘village by the quiet river’ Given in the grammar, chapter V, Names of Places.
Confidence: low

Batchelor's reading and gloss as printed in 1905; the segmentation is his, and several of its elements answer to no dictionary headword.

Batchelor1905 § V "Place Names Considered", s.v. Mombetsu

Sources

zenibako_trek… Batchelor1905