The story
- Proto-Indo-European*bʰeh₂-
- Proto-Hellenic*pʰōnā́
- Ancient Greekφωνή (phōnḗ)
- Englishphono-
- Proto-Indo-European*teh₂g-
- Proto-Hellenic*tat͏̌t͏̌ō
- Ancient Greekτάσσω (tássō)
- Ancient Greekτακτικός (taktikós)
- New Latintactica
- Englishtactic
- Englishtactics
- English todayphonotactics
From phono- (“sound”) + tactics (“organization, arranging”).
Etymology from Wiktionary, CC BY-SA 4.0.