Proparoxytone

Proparoxytone is a linguistic term for a word with stress on the antepenultimate syllable, that is, the last but two, e.g the English words acromegaly and operational. Related terms are paroxytone (stress on the last but one) and oxytone (accented on the last one). Ernst Robert Curtius offers an interesting use of the term in a footnote (Ch. 8, n. 33) of his European Literature in the Latin Middle Ages. He is commenting on this passage from Smaragdus' didactic poem on grammar:

Partibus inferior jacet interiectio cunctis

Ultima namque sedet et sine laude manet.

Here is Curtius' note:

"Sad is the lot of the interjection, for of all the parts of speech it has the lowest place. There is none to praise it." On the way from Latin to French the penultimate syllable of the proparoxytone succumbed. Mallarme was so touched by this, that he wrote a prose-poem on the "Death of the Penultimate" (Le Démon de l'analogie in Divagations). It ends: Je m'enfuis, bizarre, personne condamne à porter probablement le deuil de l'explicable Penultième."  Grammar too has its tragedies.