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achromia
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humane
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abyss
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nations
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grafters
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brooding
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abu ali al-husain ibn abdallah ibn sina
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concealed
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insidiously
insidiously /ɪnˈsɪdiəsli/
adverb
-
(
)
In a harmfully insidious manner
(
perniciously
, insidiously
)
in a harmfully insidious manner
These drugs act insidiously
these drugs act insidiously