Macmillan Dictionary

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Pronunciation of 

insidious

view main entry for insidiousadjective  /ɪnˈsɪdiəs/
British English pronunciation: insidiousClick to listen to the pronunciation of insidious

derived words

insidiously

adverb

insidiousness

noun [uncountable]
insidiousness noun [uncountable]Risks, threats and dangers: risk, hazard, menace, calculated risk, danger, peril, gambling, threat

This is the British English pronunciation of insidious. View American English pronunciation of insidious.

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