Dialects

No trace of the languages of the races before the arrival of the Old Ones remain. The Old Ones themselves spoke what could be assumed to be an alien language, something that eventually morphed into the common tongue of the Eldar peoples. The origin of Mannish languages can be traced back to the Dawn Age, too.

Mannish languages
The languages of men stem from the root of Vael'kethic, which was used by the first men to cross the Great Ocean. This diverged into a wealth of prosperous and varied dialects, although the most well known is the Common Speech.
 * 1) Vael'kethic: mother tongue of all Men, used by the Chieftains as they landed in Plethira
 * 2) * Moul'kethic: language of pastoralists settling along the shores of the Satteloth Sea
 * 3) ** Tuhüic: lost language of ancient Tuhüin
 * 4) *** Maessi: language of the Maessis Empire
 * 5) **** Xajic: language of the Xajil Kingdom
 * 6) **** Old Yipamentii: ancient language of Yipamentai peoples
 * 7) ***** Old Imperial: language of the Empire
 * 8) ****** New Imperial: otherwise known as the Common Speech. Dialect of many modern Old World nations
 * 9) *** Zustalthic: language of ancient Zustakan tribal peoples
 * 10) ** Uksa'i: lost language of ancient Ukser
 * 11) ** Zaervic: language of Zaervum
 * 12) ** Salcasti: language of ancient Salcastû
 * 13) *** Old Pontisti: lost language of ancient Pontista
 * 14) **** Pontisti: language of Pontista
 * 15) *** Trisilian: language of the Trisilian Empire
 * 16) **** Magahandii: language of Slateush
 * 17) *** Gelgoshi: language of Gelgosh and Durunesk
 * 18) *** Xaccarii: language of Xaccaran
 * 19) *** Maktosan: language of Maktosa and Duruthos
 * 20) *** Kalliculic: language of Kalliculat
 * 21) *** Umereshii: lost language of the tribal Nontogoeshian peoples
 * 22) **** Nontogoeshii: language of Nontogoesh
 * 23) **** Rostoroethii: language of Rostoroeth
 * 24) * Galthugic: lost language of the first Kyonsi tribal peoples
 * 25) ** Kallugic: language of the Kalligi tribe
 * 26) ** Zalthic: language of the Zalthii tribe
 * 27) ** Golguri: language of the Golguruth tribe
 * 28) ** Alkothii: language of the Alkothath tribe
 * 29) ** Malcothic: language of the Malcothi tribe
 * 30) * Yalthuzic: lost language of those Men who mixed their tongues with Eldar speech
 * 31) * Eak'kethic: language of the Eastern peoples
 * 32) * Scala'kethic: language of the settlers of the southern deserts
 * 33) ** Scalindian: language of Scalindia
 * 34) * Kael'kethic: language of the settlers of the Ancient North
 * 35) ** Umil-Akkisiric: lost language of the tribes of Tynheri
 * 36) *** Akkisiric: lost language of Akkisir
 * 37) ** Hajii: lost language of Hajiki
 * 38) ** Naeri: lost language of Naerus
 * 39) ** Knaruturic: lost language of Knaruturi

Eldar languages
Eldar languages are without a doubt the oldest still remaining in existence.
 * 1) Alcai-tolgaic: the long lost mother tongue of all Eldar, said to be derived from the speech of the Old Ones
 * 2) * Alcai-nolmusic: lost language of the Eldar of the northern mansions
 * 3) * Alcai-hallic: lost language of the Eldar of Nyan Marmu
 * 4) * Alcai-tilthsul: language of the Eldar of Non Selpossis

Other languages
C'alcaxic: common, guttural speech of the Keth and Trolls

Ulghalgurithûl: undeciphered language of the Flesh-Angels