Rivers are some of the oldest geographic names, simply because they predate any human settlement, and were more important to our prehistoric ancestors (for drinking water, transport, washing...) than mountains. The origin of many rivers' name is lost in the depth of time. We nevertheless know the name (or one of the names) most of them had during the Iron Age, Bronze Age and sometimes even before.
Celtic names
- Danube (2,860 km) : from Celtic Dānu, meaning "to flow" (same origin for the Rivers Don, Dnieper and Dniester in Russia).
- Dordogne (490 km) : from the pre-Celtic Durānius, derived from the Proto-Indo-European root dur- or dor-, and the suffix -onna, which means "source, river".
- Douro (897 km) : probably from the Celtic root is *dubro- ("water"), Latinised as Durius.
- Loire (1,091 km) : from Celtic Liga, which means "silt, sediment, deposit, alluvium". Adapated into Latin as Liger.
- Main (524 km) : from Celtic Moin or Mogin (after the god Mogon). Latinised as Moenus.
- Meuse (925 km) : from Mosa (also in Latin), the name of a Celtic deity.
- Neckar (367 km) : from Celtic root Nik-, meaning "wild water" or "wild fellow", evolving into Nikros, Nicarus and Neccarus.
- Rhône (813 km) : from the Celtic Rodo or Roto, literally "that which rolls", or "that which runs". Adapted by the Greeks into Rhodanos, then by the Romans into Rhodanus.
- Seine (776 km) : from Sicauna, made up of Celtic sakw, which means "sacred" and from the Pre-Indo-European suffix -onna which means "source, river".
- Thames (346 km) : from the Celtic Tamēssa, probably meaning "dark". Rendered in Latin as Tamesis and in Middle English as Temese.
- Trent (298 km) : from the Celtic words tros ("over") and hynt ("way"), possibly meaning "strongly flooding".
Germanic names
- Elbe (1,091 km) : from the Old Germanic Albia, meaning "river".
- IJssel (125 km) : from the Germanic i sala, meaning "dark water".
- Rhine (1,320 km) : from Middle High German Rin, from the Proto-Indo-European root *reie- ("to flow, run").
- Scheldt (350 km) : from the Old Germanic word for "thin" or "shallow" (corresponding to Old English sceald, Low German schol, Frisian skol, and Swedish skäll).
- Weser (452 km) : from Wisara (or Wisura, Wisera, Wisora), probably meaning "meadow water", probably from the Indo-European root *ueis/*uis ("to flow").
Latin names
- Ebro (910 km) : from Latin Iber, probably referring to Iberia.
- Moselle (545 km) : from the Latin Mosella ("Little Meuse").
- Po (652 km) : from Latin Padus, related to the wild pine trees in valley. The former Greek name was Eridanus, and the Ligurian name was Bodincus, meaning "river without bottom" or "deep river".
- Tagus (1,038 km) : from Latin taliāre, meaning "to cut (though)".
Other roots
- Garonne (575 km) : from the Aquitanian/Old Basque root *kʰarr-, meaning "rock", and a Pre-Indo-European suffix -unn-, -onna which means "source, river".
- Guadalquivir (657 km) : from the Arabic al-wadi al-Kabir, meaning the "great river".
- Oder (866 km) : from proto-Indo-European Adra, probably meaning "water vein".
- Severn (354 km) : from Hafren (Latinised as Sabrina), name of a pre-Celtic princess or nymph drown in the river.
- Tiber (406 km) : from the Estruscan or Italic word Tibur, possibly related to the Celtic root-word dubr, "water".
Celtic names
- Danube (2,860 km) : from Celtic Dānu, meaning "to flow" (same origin for the Rivers Don, Dnieper and Dniester in Russia).
- Dordogne (490 km) : from the pre-Celtic Durānius, derived from the Proto-Indo-European root dur- or dor-, and the suffix -onna, which means "source, river".
- Douro (897 km) : probably from the Celtic root is *dubro- ("water"), Latinised as Durius.
- Loire (1,091 km) : from Celtic Liga, which means "silt, sediment, deposit, alluvium". Adapated into Latin as Liger.
- Main (524 km) : from Celtic Moin or Mogin (after the god Mogon). Latinised as Moenus.
- Meuse (925 km) : from Mosa (also in Latin), the name of a Celtic deity.
- Neckar (367 km) : from Celtic root Nik-, meaning "wild water" or "wild fellow", evolving into Nikros, Nicarus and Neccarus.
- Rhône (813 km) : from the Celtic Rodo or Roto, literally "that which rolls", or "that which runs". Adapted by the Greeks into Rhodanos, then by the Romans into Rhodanus.
- Seine (776 km) : from Sicauna, made up of Celtic sakw, which means "sacred" and from the Pre-Indo-European suffix -onna which means "source, river".
- Thames (346 km) : from the Celtic Tamēssa, probably meaning "dark". Rendered in Latin as Tamesis and in Middle English as Temese.
- Trent (298 km) : from the Celtic words tros ("over") and hynt ("way"), possibly meaning "strongly flooding".
Germanic names
- Elbe (1,091 km) : from the Old Germanic Albia, meaning "river".
- IJssel (125 km) : from the Germanic i sala, meaning "dark water".
- Rhine (1,320 km) : from Middle High German Rin, from the Proto-Indo-European root *reie- ("to flow, run").
- Scheldt (350 km) : from the Old Germanic word for "thin" or "shallow" (corresponding to Old English sceald, Low German schol, Frisian skol, and Swedish skäll).
- Weser (452 km) : from Wisara (or Wisura, Wisera, Wisora), probably meaning "meadow water", probably from the Indo-European root *ueis/*uis ("to flow").
Latin names
- Ebro (910 km) : from Latin Iber, probably referring to Iberia.
- Moselle (545 km) : from the Latin Mosella ("Little Meuse").
- Po (652 km) : from Latin Padus, related to the wild pine trees in valley. The former Greek name was Eridanus, and the Ligurian name was Bodincus, meaning "river without bottom" or "deep river".
- Tagus (1,038 km) : from Latin taliāre, meaning "to cut (though)".
Other roots
- Garonne (575 km) : from the Aquitanian/Old Basque root *kʰarr-, meaning "rock", and a Pre-Indo-European suffix -unn-, -onna which means "source, river".
- Guadalquivir (657 km) : from the Arabic al-wadi al-Kabir, meaning the "great river".
- Oder (866 km) : from proto-Indo-European Adra, probably meaning "water vein".
- Severn (354 km) : from Hafren (Latinised as Sabrina), name of a pre-Celtic princess or nymph drown in the river.
- Tiber (406 km) : from the Estruscan or Italic word Tibur, possibly related to the Celtic root-word dubr, "water".
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