Flatly

Full definition of flatly

Adverb

1. In a definite manner; in a manner showing complete certainty.It was an accusation that he flatly denied.
2. In a manner that shows no emotionHe replied flatly to the policeman's questions.

Usage notes

In sense 1. the collocation is nearly always with a negative idea. To flatly deny. To flatly refuse. To flatly contradict. And so on, similarly.