Flat·ly, adv.
  1. In a flat manner; evenly; horizontally; without spirit; dully; frigidly.
     He that does the works of religion slowly, flatly, and without appetite.   --Jer. Taylor.
  2. peremptorily; positively; plainly; forthrightly. “He flatly refused his aid.”
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  flatly
       adv : in an unqualified manner; "he flatly denied the charges"
             [syn: categorically, unconditionally]