The story
- Proto-Italic*wre-
- Latinre-
- Proto-Indo-European*werb(h)-os
- Proto-Indo-European*werb⁽ʰ⁾-os
- Proto-Italic*wer(β/b)os
- Latinverber
- Latinverberō
- Latinreverberō
- Latinreverberātus
- Englishreverberate
- English todayreverberator
From reverberate + -or.
Etymology from Wiktionary, CC BY-SA 4.0.