- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
property
-
atonement
-
impertinent
-
lying-in
-
transcendence
-
histrionics
-
uncertain
-
squirrel monkey
-
achoerodus gouldii
-
antidisestablishmentarianism
- Hide translation
insidiously
insidiously /ɪnˈsɪdiəsli/
adverb
-
(
)
In a harmfully insidious manner
(
perniciously
, insidiously
)
in a harmfully insidious manner
These drugs act insidiously
these drugs act insidiously