More from Merriam-Webster on insidious Thesaurus: All synonyms and antonyms for insidious Nglish: Translation of insidious for Spanish Speakers Britannica English: Translation of insidious for Arabic SpeakersLast Updated: 6 Jan 2025 - Updated example sentences Love words? Need even more definitions?
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Synonyms for insidious in Free Thesaurus. Antonyms for insidious. 23 synonyms for insidious: stealthy, subtle, cunning, designing, smooth, tricky, crooked, sneaking, slick, sly, treacherous, deceptive, wily, crafty, artful... What are synonyms for insid
Define insidious. insidious synonyms, insidious pronunciation, insidious translation, English dictionary definition of insidious. progressing inconspicuously but harmfully: an insidious disease; treacherous; crafty; stealthily deceitful: an insidious agr
ThesaurusAntonymsRelated WordsSynonymsLegend: Switch tonew thesaurus Noun1.insidiousness- subtle and cumulative harmfulness (especially of a disease) harmfulness,injuriousness- destructiveness that causes harm or injury 2.insidiousness- the quality of being designed to entrap ...
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