Answer: runson

AnswerCrossword Clue
RUNSONTalks and talks
RUNSONKeeps going
RUNSONWon't stop gabbing
RUNSONSpeaks at length
RUNSONContinues
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