THESAURUS
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 authority, with telling effect