nangagikineresgan

English: Translation
repeatedly outdo one another in strength or loudness; keep escalating
English: Definition
An expanded form describing sustained, repeated, or alternating competitive intensification among multiple participants, especially when the participants continually raise their voices or increase their force in response to one another.
Notes

Part of speech: iterative plural reciprocal-competitive verb

Morphology: Expanded iterative formation related to nangagikinesgan. The internal expansion in kineresgan appears to add repeated or distributed escalation.