Synonyms for Motormouth:

• adj.

  •garrulous (adjective)
  • effusive,
  • prolix,
  • loquacious,
  • babbling,
  • long-winded,
  • gossiping,
  • Prating,
  • windy,
  • chatty,
  • wordy,
  • gushing,
  • gabby,
  • flap jaw,
  • verbose,
  • chattering,
  • glib,
  • voluble.
  •loquacious (adjective)
  • garrulous,
  • jabbering,
  • fluent.

• n.

  •blabbermouth (noun)
  • chatterer,
  • babbler,
  • blabber,
  • bigmouth,
  • bag of wind,
  • tattletale,
  • gossipmonger,
  • jabberer,
  • chatterbox,
  • squealer,
  • gossiper,
  • blowhard,
  • blabberer,
  • motor-mouth,
  • windbag,
  • gasbag,
  • babblemouth,
  • loudmouth,
  • yapper,
  • Gabber.
  •person (noun)
  • motormouth.
  •windbag (noun)
  • big talker,
  • Gascon,
  • bragger,
  • braggart,
  • know-it-all,
  • boaster.

• Other synonyms:

  •
  • nosy-parker,
  • busybody,
  • voyeur,
  • snoop,
  • scandalmonger,
  • stickybeak,
  • rumormonger.
  •
  • magpie,
  • rambler,
  • gossip.
  •chatterer
  • blabbermouth.
  •Other relevant words:
  • gabbler,
  • prattler,
  • conversationalist,
  • cackler,
  • jay,
  • bore.

Antonyms for Motormouth:

• adj.

  • garrulous
    untalkative, still, reserved, quiet, silent, mum.
  • loquacious
    restrained, subdued.

Homophones for Motormouth:

• maturement, monetary unit, maternity, meter maid, mitterand, modern-day, modernity, monotremata.

Hyponym for Motormouth:

• n.

  • person
    utterer, verbalizer, verbaliser, speaker, talker.