
1) Chatterbox 2) Constant talker 3) Fictional cyborg 4) Nonstop talker 5) Someone who talks incessantly 6) Speaker 7) Talker 8) Used-car salesman 9) Utterer 10) Verbaliser 11) Verbalizer 12) VH1 music show
Found on
https://www.crosswordclues.com/clue/motormouth

1) Chatterbox
Found on
https://www.crosswordclues.com/clue/motormouth

Steve Johnson The programme was launched following the decision to axe No. 73, which had run in the same slot until early 1988. No. 73 had been revamped during its final series as 7T3, with a partially exterior set. However, the new 7T3 set-up was expensive and difficult to produce, and so it was decided to switch to a fully studio-based set-up. T...
Found on
http://en.wikipedia.org/wiki/Motormouth
[VH1] Motormouth is a reality show on VH1, presented by Zane Lamprey, which showcases people unknowingly being taped in their cars while singing a song. It began airing October 26, 2004. The skits would end when the victim stopped and Lamprey would appear to tell them `You`ve been Motormouth-ed`. ==Episodes== ...
Found on
http://en.wikipedia.org/wiki/Motormouth_(VH1)

Motormouth is American slang for someone who talks excessively.
Found on
http://www.probertencyclopaedia.com/browse/ZM.HTM
noun someone who talks incessantly; `I wish that motormouth would shut up`
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.