Synonyms for Flatly:

adv.

categorically (adverb)
absolutely, surely, indubitably, unconditionally, denominationally, typically, certainly, categorically, unequivocally, unqualifiedly, definitely, undeniably.
continuously (adverb)
indefatigably, incessantly, constantly, consistently, uninterruptedly, unendingly, interminably, habitually, unceasingly, ceaselessly, perpetually, regularly, homogeneously, perennially, invariably, unremittingly, coherently, undyingly, everlastingly, uniformly, Straightly, recurrently, steadily, persistently, continually, cyclically, lastingly, consecutively, evenly, repetitively, sequentially, continuously, always, monotonously, unvaryingly, endlessly.
emphatically (adverb)
certainly.
flatly (adverb)
horizontally, monotonously, flat, unequivocally, unconditionally, absolutely, Levelly, emphatically, positively, definitely, blandly, dully, categorically.
non-resonantly (adverb)
dully, non-resonantly, mutely.
tastelessly (adverb)
insipidly, tastelessly, blandly, plainly, vapidly, weakly, mildly, banally, Stalely.
unconditionally (adverb)
unqualifiedly.

adv

absolutely (adverb)
unconditionally.
categorically (adverb)
absolutely, surely, indubitably, unconditionally, denominationally, typically, certainly, categorically, unequivocally, unqualifiedly, definitely, undeniably.
continuously (adverb)
indefatigably, incessantly, constantly, consistently, uninterruptedly, unendingly, interminably, habitually, unceasingly, ceaselessly, perpetually, regularly, homogeneously, perennially, invariably, unremittingly, coherently, undyingly, everlastingly, uniformly, Straightly, recurrently, steadily, persistently, continually, cyclically, lastingly, consecutively, evenly, repetitively, sequentially, continuously, always, monotonously, unvaryingly, endlessly.
flatly (adverb)
evenly, Levelly, horizontally.
horizontally (adverb)
evenly, Levelly, horizontally.
non-resonantly (adverb)
dully, non-resonantly, mutely.
tastelessly (adverb)
insipidly, tastelessly, blandly, plainly, vapidly, weakly, mildly, banally, Stalely.

n.

halting, imperative, fluent, Brokenly, strong, bantering, Gibbering, flat out, positively, emphatically, colloquial, flat, definite. undemonstrative, neutral, passive, emotionless, blank, controlled, unresponsive, impassive, restrained, unemotional. flatly (noun)
unconditionally, categorically.

Other synonyms:

flat out, bantering, Gibbering, Brokenly, colloquial. positively. definite. fluent. flat. definitely
emphatically.
Other relevant words:
flat out, controlled, passive, emotionless, halting, imperative, bantering, definite, fluent, Gibbering, flat, unemotional, positively, impassive, emphatically, undemonstrative, colloquial, restrained, neutral, strong, unresponsive, Brokenly, blank.

Usage examples for flatly

  1. This was the case when I received these letters, and my answers to them, in which I flatly refused everything that was asked of me, bore strong marks of the effect they had had upon my mind. – The Confessions of J. J. Rousseau, Book XI. by Jean Jacques Rousseau
  2. And Jack did, then and there, the result being that Jacob Buckley did not take it well, but told him flatly to mind his own business. – Philosopher Jack by R.M. Ballantyne
  3. She flatly refused to let Horace see her. – The New Magdalen by Wilkie Collins