actively
alertly
boldly
briskly
dynamically
eagerly
energetically
firmly
forcefully
forcibly
hammer and tongs
hardily
hardly
heartily
like crazy
like mad
lustily
might and main
mightily
powerfully
purposefully
resolutely
robustly
spiritedly
stalwartly
strenuously
strongly
unfalteringly
vivaciously
with a vengeance
zealously
rigorously