The name Teutamos appears to contain the Proto-Indo-European root *teutéha-, a word meaning "people" or "tribe".
[3] Joseph Vendryes had suggested that compound names with the stem *teutéha- seem to be common around the southeast Europe and the Balkans,[4] although the name "is attested ... in Messapic, in Osco-Umbrian, in Venetic, in Gaulish, in Celtiberian, in Brittonic languages, in Welsh, in German and in the Baltic languages".
When Eumenes, after escaping from Nora, joined the Argyraspids in Cilicia, Antigenes and Teutamus at first, in obedience to the orders of the regent Polyperchon and Olympias, placed themselves under his command but they secretly regarded him with jealousy, and Teutamus even listened to the overtures of Ptolemy, and would have joined in a plot against the life of Eumenes, had he not been dissuaded by his more prudent colleague.
[6] But though they continued to follow the guidance of Eumenes, and with the troops under their command, bore an important part in his campaigns against Antigonus, they took every opportunity of displaying their envy and jealousy, which their general in vain tried to allay, by avoiding all appearance of the exercise of authority.
During the winter campaign in Gabiene (316 BC) the two leaders of the Argyraspids were the prime movers of a plot for the destruction of Eumenes; and after the final action, Teutamus was the first to open negotiations with Antigonus for the recovery of the baggage of the Argyraspids by the betrayal of his rival into his hands.