All adverbs

harmoniously
in a harmonious manner
 
quiet
with little or no activity or no agitation (`quiet' is a nonstandard variant for `quietly')
 
hard
very near or close in space or time
 
zealously
in a zealous manner
 
lineally
by an unbroken line of descent
 
anon
(old-fashioned or informal) in a little while
 
reversibly
in a reversible manner
 
ad nauseam
to a sickening extent
 
aloft
at or to great height; high up in or into the air
 
fussily
in a fussy manner
 
touchily
in a touchy manner
 
chaotically
in a wild and confused manner
 
afield
in or into a field (especially a field of battle)
 
widely
so as to leave much space or distance between
 
piratically
in a piratical manner
 
dialectically
in a dialectic manner
 
decisively
with finality; conclusively
 
sourly
in a sour manner
 
impregnably
in an impregnable manner
 
en clair
in ordinary language
 
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