insidious

• Describe algo que es dañino o peligroso de manera encubierta o traicionera, a menudo extendiéndose o actuando gradualmente sin ser notado.

Describes something that is subtly harmful, dangerous, or deceitful, often spreading gradually without being noticed.

1. Subtly harmfulC1formal

   Proceeding in a gradual, subtle way but with harmful effects.

   insidioso

   • The insidious disease spread without any early symptoms.
   • Prejudice can have an insidious effect on society.
   • The insidious influence of propaganda eroded public trust.

   Sinónimoscorrosivedeceptiveperniciousstealthysubtletreacherousunderhanded

   Antónimosblatantdirectflagrantobviousovert

2. Treacherous or deceitfulC1formal

   Intended to entrap or deceive in a cunning way.

   Insidioso (traicionero o engañoso)

   • The insidious plot was designed to overthrow the government.
   • He used insidious tactics to manipulate his colleagues.
   • The insidious nature of the scheme made it hard to detect.

   Sinónimoscraftycunningdeceitfulguilefulslysubtletreacherousunderhandedwily

   Antónimoscandidforthrightguilelesshonestopenstraightforward