insidiousadjective · Level 2 SAT1Working ill by slow and stealthy meansMisinformation spreads through social networks by insidious means, disguising itself as eyewitness testimony or expert opinion.ModuleLevel 2RegistercommonCollectionCollection 041SAT Plus planAlso in Collection 041effervescent, lenient, evanescent, resplendent, soluble, tractable, propitious, lurid and 1 more