Synonyms to with authority

mightily, almighty, arduously, authoritatively, awfully, big, cogently, commandingly, consequentially, deafeningly, dynamically, effectively, effectually, energetically, ex cathedra, exceedingly, extremely, firmly, forcefully, forcibly, greatly, hardly, heartily, highly, hugely, imperatively, imperviously, impregnably, intensely, invincibly, invulnerably, irresistibly, just, laboriously, loudly, lustily, might and main, mighty, momentously, notably, officially, only too, potently, powerful, powerfully, pretty, productively, puissantly, pungently, quite, real, really, resistantly, right, robustly, ruggedly, so, soundly, stalwartly, staunchly, stoutly, strenuously, strikingly, strongly, sturdily, surpassingly, tellingly, terribly, terrifically, to good account, to good purpose, toilsomely, unyieldingly, very, vigorously, weightily, with a vengeance, with telling effect, ardently, eloquently, expressively, ferve