loudmouth

listen to the pronunciation of loudmouth
English - English
One who talks too much or too loudly, especially in a boastful or self-important manner

I hear every word spoken by the loudmouth in the next office.

{i} person who speaks loudly and rudely, impolite and noisy person (Slang)
a person who causes trouble by speaking indiscreetly
one who talks too much or too loudly
disapproval If you describe someone as a loudmouth, you are critical of them because they talk a lot, especially in an unpleasant, offensive, or stupid way. someone who talks too much and says offensive or stupid things
loudmouthed
Tending to loud, indiscreet, especially bragging, speech
loudmouthed
{s} tending to speak loudly and rudely, impolite and noisy (Slang)
loudmouthed
Having a loud voice; talking or sounding noisily; noisily impudent
loudmouth
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