In a droning manner; speaking or sounding in a dull, monotonous, humming way.
From 'drone' with the present participle '-ing' and adverbial suffix '-ly,' creating an adverb that describes how something is done. This follows standard English adverb formation.
The word 'droningly' is almost self-fulfilling—saying it out loud naturally makes you speak in a monotone, which is why it's the perfect word to describe boring speeches!
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