Synonyms of mightily in English:

mightily


See definition of mightily

adverb

1‘he is a mightily impressive election campaigner’

SYNONYMS

extremely, exceedingly, enormously, vastly, immensely, tremendously, hugely, markedly, remarkably, abundantly

awfully, dreadfully

very, very much, most, to a great extent

informal majorly, mega, oh-so

informal, dated devilish

North American informal mighty, plumb

2‘Ann and I laboured mightily to no avail’

SYNONYMS

strenuously, energetically, powerfully, heavily, hard, with all one's might, with might and main, all out, heartily, vigorously, with vigour, forcefully, with force, forcibly, with great effort, fiercely, intensely, eagerly, industriously, diligently, assiduously, conscientiously, enthusiastically, sedulously, with application, earnestly, with perseverance, persistently, indefatigably

informal like billy-o, like mad, like crazy