Definition
"Loud-mouthed" describes someone who talks loudly and often boastfully or offensively. It suggests a person who is overly vocal, often saying inappropriate or tactless things. Think of someone who dominates conversations and isn't afraid to express controversial opinions loudly—that's loud-mouthed. Unlike someone who is simply talkative, 'loud-mouthed' implies a lack of discretion and sensitivity. It suggests a person who is obnoxious and often disruptive. It signifies a lack of tact and consideration for others.