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conchy
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intervention
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fuzzy
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approachable
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adequateness
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immortal
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insidiously
insidiously /ɪnˈsɪdiəsli/
adverb
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(
)
In a harmfully insidious manner
(
perniciously
, insidiously
)
in a harmfully insidious manner
These drugs act insidiously
these drugs act insidiously