acuted

Of a written word: exhibiting acute accent.

Of a pronounced word: exhibiting a language-specific type of pitch accent or tone characterized by an acute accent mark in the respective language transcription or orthography.

I do not suppose the Greeks altered the letters in exactly the same way, but rather that their acuted οί inclined toward the modern sound, or that the Ο was attenuated or altogether lost in it. The diphthong in unaccented syllables probably resembled the acuted rather than the circumflex; for before an enclitic it can only assume the acute accent.