ˈfau̇l(l)ē, -)i adverb
Etymology: Middle English, from Old English fūllice, fūllīce, from fūllic, fūllīc, adjective, foul, from fūl foul + -lic, -līc -ly (adjective suffix)
: in a foul manner: as
a. : in an obscene manner : lewdly
b. : in a shameful manner : wickedly
last June two constables were foully murdered — Robert Sherrod
c. archaic : fetidly
d. archaic : grievously
e. : in a coarse manner : insultingly
an internationally honored teacher, scholar, and philosopher was foully condemned — M.R.Cohen
f. archaic : in an ugly manner : hideously