230 Another Word for Insidious? – Insidious Synonyms & Antonyms

Want to say insidious differently? Here are other words for insidious and its similar synonyms and opposite words to say in unique way.


Meaning of insidious

The primary meaning of "insidious" is stealthy or sneaky, often in a way that is intended to harm or deceive.

Etymology of insidious

The word "insidious" comes from the Latin "insidiosus", which means "cunning" or "deceitful", derived from "insidia", meaning "ambush" or "snare", and the suffix "-osus", which forms an adjective indicating a tendency or quality
Historically, the word has been used to describe actions or behaviors that are intended to harm or deceive others in a stealthy or cunning manner

Synonyms

stealthy sneaky cunning crafty sly deceitful treacherous duplicitous double-dealing underhanded unscrupulous dishonest disingenuous fraudulent corrupt corrupting pernicious malignant harmful damaging destructive deleterious injurious noxious baneful baleful invidious odious abhorrent detestable heinous atrocious villainous nefarious wicked evil malevolent malignant vicious virulent poisonous toxic deadly fatal lethal mortal perfidious perfidious traitorous treacherous backhanded indirect covert furtive clandestine surreptitious secretive hidden concealed veiled disguised masked camouflaged

Definitions

  • Having a gradual and cumulative effect, often in a way that is intended to harm or deceive
  • * Proceeding in a gradual, subtle, and often stealthy manner, often with the intention of causing harm or damage

Usage Examples

  • The insidious spread of the disease had a devastating impact on the community
  • * The company's insidious marketing tactics were designed to manipulate consumers into buying their products
  • * The insidious nature of the virus made it difficult to detect and treat

Antonyms

obvious overt explicit clear transparent honest straightforward direct open forthright sincere genuine truthful trustworthy reliable faithful loyal aboveboard candid frank blunt straightforward upright virtuous righteous just fair equitable harmless benign beneficial helpful advantageous favorable propitious auspicious

Related Adjectives

harmful damaging injurious poisonous toxic deadly fatal mortal pernicious malignant vicious virulent lethal destructive devastating calamitous disastrous tragic evil malevolent wicked villainous nefarious treacherous perfidious deceitful duplicitous cunning crafty sly stealthy sneaky underhanded unscrupulous dishonest disingenuous corrupt corrupting rotten decayed degenerate declined ruined destroyed devastated

Related Nouns

threat danger risk hazard menace peril harm damage injury disease virus infection poison toxin venom malignancy cancer tumor corruption decay rot deterioration degeneration decline downfall ruin destruction devastation calamity disaster catastrophe tragedy evil malevolence wickedness villainy nefariousness treachery perfidy deceit deception duplicity cunning craft guile artifice ruse stratagem plot scheme

Related Verbs

harm damage injure poison infect taint corrupt decay deteriorate degenerate decline downfall ruin destroy devastate menace threaten imperil endanger risk hazard deceive dupe cheat swindle manipulate exploit betray treacherously perfidiously viciously virulently toxicly lethally fatally mortally
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