accentuator

Etymology tree
Proto-Indo-European *h₂éd
Proto-Italic *ad
Proto-Italic *ad-
Latin ad-
Proto-Indo-European *keh₂n-der.
Proto-Italic *kanō
Latin canō
Latin accinō
Proto-Indo-European *-tus
Proto-Italic *-tus
Latin -tus
▲
Ancient Greek προσῳδῐ́ᾱ (prosōidĭ́ā)calq.
Latin accentus
Proto-Indo-European *-h₂
Proto-Indo-European *-éh₂
Proto-Indo-European *-yéti
Proto-Indo-European *-eh₂yéti
Proto-Italic *-āō
Latin -ō
Latin accentuō
Medieval Latin accentuātusbor.
English accentuate
Proto-Indo-European *-tōr
Proto-Italic *-tōr
Latin -tor
Latin -ātor
Old French -eorbor.
Middle English -our
▲
Latin -torlbor.
English -or
English accentuator
From accentuate + -or.