Synonyms to authoritatively

highly, a deal, a great deal, a lot, abundantly, approvingly, as all creation, as all get-out, beaucoup, considerable, considerably, decidedly, effectively, enthusiastically, ever so, ever so much, exceedingly, exceptionally, extraordinarily, extremely, favorably, galore, greatly, hugely, immensely, importantly, in great measure, incomparably, influentially, largely, much, muchly, never so, no end, no end of, not a little, notably, parlous, plenty, powerfully, pretty much, quite, remarkably, so, so very much, strikingly, strongly, surpassingly, to the skies, tremendously, very, very much, warmly, well, mightily, almighty, arduously, awfully, big, cogently, commandingly, consequentially, deafeningly, dynamically, effectually, energetically, ex cathedra, firmly, forcefully, forcibly, hardly, heartily, imperatively, imperviously, impregnably, intensely, invincibly, invulnerably, irresistibly, just, laboriously, loudly, lustily, might and main, mighty, momentously, officially, only too, potently, powerful,