bombinator
A person who speaks or makes noise to no effect, as a flattering toady or empty orator.
literary
None of this multitude of thinkers and their satellites brought his thoughts into really conclusive contact with the others. To do it would have been to discover much practical identity and so lose distinction. After their fashion, each bombinated abundantly with only the slightest regard to other bombinators.
Where it comes from
From bombinate + -or. Frog sense, New Latin (genus name), agent noun form of Medieval Latin bombināre, from Late Latin bombitare (“to buzz or hum”).
Adapted from the Wiktionary entry bombinator (CC BY-SA 4.0).