pestiferously
Adverb
Meaning
In a pestiferuos manner.
Source: Webster's dictionarySynonyms
excessively
aggravatingly
contagiously
infectiously
persistently
irritatingly
vexatiously
pervasively
noxiously
disruptively
disturbingly
obnoxiously
gratingly
exasperatingly
infuriatingly
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