mouthy

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From mouth +‎ -y (adjectival suffix).^[1]

mouthy (comparative mouthier, superlative mouthiest)

1. (slang, derogatory) Overly talkative, insolent, and loud.

   Synonyms: gobby (talkative), lippy (insolent)

2. Of a dog: inclined to bite or nip.

   Synonyms: bitey, nippy

   • 2008, Pat Miller, Play with Your Dog:

     An excellent way to redirect a “mouthy” dog's teeth to an appropriate object. Great exercise and the perfect outlet for family members who want to play roughly.

   • 2011, Tamar Geller, 30 Days to a Well-Mannered Dog: The Loved Dog Method, page 94:

     The separation and isolation will send a clear message to your overly mouthy dog. After a couple of minutes, you can try again. It may take a few repetitions before your dog connects the nipping behavior with losing you, […]

From mouth +‎ -y (diminutive suffix).

mouthy (plural mouthies)

2. Alternative spelling of mouthie (“the mouth”).
   • 1997, Gary G. Graham, “Tweet Tweet Tweet in Birdland”, in The Cannabis Octet, Glasgow: Crushed Anna Books, published 2001, →ISBN, “Cannabis-2: Psycho John and Shotgun Jack” section, page 63:

     Alison says ‘Open your little mouthy and I’ll give you a pill’. I open my mouth like a baby bird and say ‘Tweet tweet tweet[’]. Incidentally, we are quite ruthless people in other respects, but behind closed doors…

   • 2006, Denise Hildreth, chapter 7, in Savannah by the Sea, Nashville, Tenn.: Thomas Nelson, →ISBN, page 44:

     “Come here, my little sweetie pie,” Mother said after Dad had done all he could. “Let Mommy wipe your little mouthy-wouffy.” She cooed and gagged at the same time while wiping the rat’s mouth off with a wet wipe as if it were a toddler.

   • 2007 June 19, Spydertrader, “Volume-Price Chart”, in misc.invest.stocks‎^[1] (Usenet), archived from the original on 2 December 2025:

     Well, whether Jack wrote a book or not SEEMED to be your point when you chose to use the word 'CLAIMED' when referencing his works. Now, rather than admit you put your foot in your mouthy, you CLAIM to not care. How nice it must be to ignore evidence, which invalidates your assertions.

   • 2022 November 15, Bruce, “Re: How many ways can you order your eggs?”, in rec.food.cooking‎^[2] (Usenet), archived from the original on 2 December 2025:

     Poor diddums! Do the edges hurt your little mouthy?