In a full-mouthed manner; speaking or acting loudly, confidently, or without hesitation or restraint.
Adverbial form created by adding '-ly' to 'full-mouthed,' following standard English patterns for converting adjectives to adverbs describing manner or behavior.
English speakers created '-ly' adverbs for almost every adjective, giving us thousands of ways to describe exactly how something was done—this flexibility is one reason English became so popular worldwide.
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