adjective🔗ShareProducing harm in a stealthy, often gradual, manner."The pressure to succeed in school was insidious, slowly eroding her confidence. "medicinediseasemindcharactermoralnegativequalityChat with AIVocabulary GamePractice Reading
adjective🔗ShareIntending to entrap; alluring but harmful."Hansel and Gretel were lured by the witch’s insidious gingerbread house."charactermoralmindChat with AIVocabulary GamePractice Reading
adjective🔗ShareTreacherous."The battle was lost due to the actions of insidious defectors."charactermoralnegativetendencyChat with AIVocabulary GamePractice Reading
