ἐρέχθω τὸ σχίζω «νῆα θοὴν ἐρεχθομένην ἀνέμοισι» (Ψ 317), ἄχθω, ὅθεν ἄχθομαι, αἴσθω καὶ αἴσθομαι, αἰσθήσομαι. τοῦτο δὲ ἀπὸ περισπωμένου ἐγένετο. τὸ μέντοι μισθῶ περισπᾶται, ὅτι μισθός. τὸ μέντοι μοχθῶ καὶ ῥοχθῶ τῷ 'ο' παραληγόμενα περισπᾶται. σεσημείωται τὸ ὀρεχθῶ «πολλοὶ μὲν βόες ἀργοὶ ὀρέχθεον» (Ψ 30). Τὰ εἰς 'θω' παραληγόμενα 'ευ' βαρύνεται, πεύθω, ἐλεύθω, κεύθω. Τὰ εἰς 'θω' παραληγόμενα φύσει μακρᾷ χωρὶς τῶν διὰ τοῦ 'η', εἰ μὴ ὄνομα προκατάρχοιτο, βαρύνεται, πείθω, κλώθω, βρώθω, ἀφ´ οὗ βέβρωθα, πρώθω. σεσημείωται τὸ ὠθῶ. τὸ μέντοι μυθῶ καὶ ἀπειθῶ περισπῶνται, ὅτι μῦθος καὶ ἀπειθής. τὸ δὲ ἀπιθῶ «οὐδ´ ἀπίθησεν μύθῳ Ἀθηναίης» (Α 220) περισπᾶται συστέλλον τὴν παραλήγουσαν. τὸ γὰρ πείθω μετάγεται εἰς περισπώμενον πιθῶ, οὗ ὁ μέλλων πιθήσω, ὁ ἀόριστος ἐπίθησεν, ὡς τὸ φείδω γίνεται φιδῶ περισπώμενον καὶ πεφιδήσεται. οὕτως ἐστὶ καὶ τὸ ἀπιθῶ. Τὰ εἰς 'θω' δισύλλαβα ἔχοντα τὴν πρὸ τέλους συλλαβὴν εἰς φωνῆεν λήγουσαν μετὰ βραχείας, μὴ τοῦ 'ε', περισπᾶται, τιθῶ, ποθῶ, μαθῶ, ἐξ οὗ τὸ μαθήσω. τὸ μέντοι σχέθω βαρύτονον ἔχον τὸ 'ε'. σεσημείωται τὸ ὄθω τὸ φροντίζω «οὐδ´ ὄθομαι κοτέοντος» (Α 181). Τὰ εἰς 'θω', εἰ ἔχοι πρὸ τέλους συλλαβὴν εἰς ἀμετάβολον λήγουσαν, ὑπεσταλμένης τῆς 'ερ', περισπᾶται, πτορθῶ, ἀνθῶ, πενθῶ, ὀρθῶ. σεσημείωται τὸ ἄλθω. τὸ δὲ πέρθω καὶ ἐγέρθω βαρύνεται ὡς ἔχον 'ερ'. Τὰ εἰς 'τω' δισύλλαβα μὴ κατ´ ἐπιπλοκὴν τοῦ 'σ' περισπᾶται, ζητῶ,
ἐρέχθω, from σχίζω: “a swift ship, being split by the winds” (Ψ 317); ἄχθω, whence ἄχθομαι; αἴσθω and αἴσθομαι, αἰσθήσομαι. This, however, arose from a circumflexed form. But μισθῶ is circumflexed, because μισθός. But μοχθῶ and ῥοχθῶ, having the penult with ο, are circumflexed. Noted is ὀρεχθῶ: “many idle oxen were stretching out” (Ψ 30).
Forms in -θω with penult ευ are barytone: πεύθω, ἐλεύθω, κεύθω. Forms in -θω with a naturally long penult, except those with η, unless a noun precedes, are barytone: πείθω, κλώθω, βρώθω, from which βέβρωθα, πρώθω. Noted is ὠθῶ.
But μυθῶ and ἀπειθῶ are circumflexed, because μῦθος and ἀπειθής. And ἀπιθῶ, “nor did he disobey the word of Athena” (Α 220), is circumflexed, contracting the penult. For πείθω is shifted to the circumflexed πιθῶ, whose future is πιθήσω, and whose aorist is ἐπίθησεν, just as φείδω becomes the circumflexed φιδῶ and πεφιδήσεται. So too is ἀπιθῶ.
Disyllables in -θω whose syllable before the end ends in a vowel after a short (other than ε) are circumflexed: τιθῶ, ποθῶ, μαθῶ, from which μαθήσω. But σχέθω is barytone, having ε. Noted is ὄθω, meaning φροντίζω: “nor do I heed one who is angry” (Α 181).
Forms in -θω, if they have the syllable before the end ending in an immutable consonant, with -ερ suppressed, are circumflexed: πτορθῶ, ἀνθῶ, πενθῶ, ὀρθῶ. Noted is ἄλθω. But πέρθω and ἐγέρθω are barytone, as having -ερ.
Disyllables in -τω not formed by insertion of σ are circumflexed: ζητῶ,