Answer: runson

AnswerCrossword Clue
RUNSON

Talks and talks

RUNSON

Keeps going

RUNSON

Won't stop gabbing

RUNSON
Speaks at length
RUNSON
Continues
RUNSONKeeps talking
RUNSONTalks too long
RUNSONTalks at length.
RUNSONWon't shut up
RUNSONKeeps going longer than is technically really necessary and then begins to start to become awkward, as a sentence
RUNSONIs overlong
RUNSONBlathers