τραυλός

• The term may derive from Proto-Indo-European *tr̥s-ú-lós, from the root *tres- (“to tremble”). Semantically, the term originally would have referred to a "trembling voice."
• The word may derive from Proto-Indo-European *tr̥s-ú-lós, an adjective derived from *tr̥s-ús, from *ters- (“dry”). Compare Ancient Greek ἰσχνόφωνος (iskhnóphōnos, “stammering”), itself from ἰσχνός (iskhnós, “dry”). Yet, according to Beekes, the loss of -σ- in these words is unlikely considering τρασιά (trasiá) and τέρσομαι (térsomai).
• The word might be Pre-Greek.

The suffix -λος is also found in other expressions for physical and psychical defects, such as τυφλός (tuphlós, “blind”), σιφλός (siphlós, “maimed”) and χωλός (khōlós, “lame”).

τραυλός • (traulós) m (feminine τραυλή, neuter τραυλόν); first/second declension

1. (of children) mispronouncing letters, stammering, lisping
2. (of swallows) twittering

• → English: traulism

• “τραυλός”, in Liddell & Scott (1940), A Greek–English Lexicon, Oxford: Clarendon Press
• “τραυλός”, in Liddell & Scott (1889), An Intermediate Greek–English Lexicon, New York: Harper & Brothers
• τραυλός in Bailly, Anatole (1935), Le Grand Bailly: Dictionnaire grec-français, Paris: Hachette
• Beekes, Robert S. P. (2010), “τραυλός”, in Etymological Dictionary of Greek (Leiden Indo-European Etymological Dictionary Series; 10), with the assistance of Lucien van Beek, Leiden, Boston: Brill, →ISBN, page 1500
• van Beek, Lucien (2022), The Reflexes of Syllabic Liquids in Ancient Greek (Leiden Studies in Indo-European; 22)‎^[1], Leiden: Brill, →ISBN, pages 384, 423
• Batisti, Roberto (2017), “A new Indo-European etymology for Greek τραυλός ‘lisping, stammering”, in Paper presented at the 3rd Indo-European Research Colloquium‎^[2], Vienna