Wiktionary
long-windedly
adv. In a long-winded manner; in a fashion employing more lengthy phrasing, utilizing extraneous words, making use of superfluous verbiage, applying more grandiose verbal construction, etc., than is strictly required, necessary, or desirable, in order to convey the essential nature of the communication.
WordNet
Usage examples of "long-windedly".
I'm going home, and let you haggle over it as long-windedly as you like.
His voice, when he profanely and somewhat long-windedly told me what he thought of my impudence in deciding what was best for him, barely shook the windows.