In a definite manner; in a manner showing complete certainty.(adverb)
In a manner that shows no emotion(adverb)
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Use "flatly" in a sentence
"Saying No flatly is more uncomfortable at first, but consequences are less painful later. ontario frog |"
""Bravura technology and dazzling effects can't overcome the film's shortcomings: Standard plot, poorly conceived villain flatly played by Kevin Spacey, and similarly wooden performance from newcomer Brandon Routh (who lacks humor) in all of his roles.""
"Tulisia said the word flatly, with no inflection, not quite able to believe it had even been voiced."