Comparative evidence

1.teu̯d, 1.steu̯d

• Arm. tʽndam, tʽndem, tʽndim ‘tremble’ (of heart), ‘quake’ (of earth), ‘agitate’; ‘move’, ‘disturb’, ‘get angry’; ‘beat’, ‘palpitate’ (Bedrossian 1875‒1879: 225.).

Łazar Pʽarpecʽi (Armenian Classical Authors, vol. 2, Antelias, Lebanon, 2003: 2358): Tayr hramann Mamikoneann Vahan hnčʽecʽucʽanel zpʽołsn paterazmakans, ew i sastkutʽenē pʽołocʽn jaynicʽ hnčʽeal erkirn tʽndēr… “Vahan Mamikonean ordered the battle trumpets to be sounded; and from the violence of the sound of the trumpets the earth echoed and shook.” (tr. Thomson 1991: 225).

Agatʽangełos (Armenian Classical Authors, vol. 2, Antelias, Lebanon, 2003: 1391): …ew amenayn amboxn zkni nora pʽołeal tʽndēr erkirn i bazmutʽenē anti. “And the whole crowd followed her, making the earth loudly shake from their great numbers.” (tr. Thomson 1976: 185).

• tʽndem ‘resound’, ‘boom’, ‘make noise’, ‘uproar’, ‘echo’; ‘shake’, ‘gingle’, ‘clatter’, ‘crash’ (Bedrossian 1875‒1879: 225).

• tʽndumn, tʽndiwn ‘sound’, ‘noise’, ‘detonation’; ‘sound of bells’, ‘gingle’, ‘clatter crash’ (Bedrossian 1875‒1879: 225f.).

References

Bedrossian 1875‒1879 = Bedrossian, M. 1875‒1879. New dictionary Armenian – English. Venice: S. Lazarus Armenian Academy.
Thomson 1976 = Thomson, R.W. 1976. Agathangelos. History of Armenians. Albany: State University of New York Press.
Thomson 1991 = Thomson, R.W. 1991. The history of Łazar Pʽarpecʽi. Scholars Press Atlanta, Georgia.