insidiously (C2)

adverb

Pronunciation: /ɪnˈsɪdiəsli/

Definition

In a manner that proceeds in a gradual, subtle way but with very harmful effects.

Examples

• The disease progressed insidiously, showing no symptoms until it was already in an advanced stage.

• Political corruption began to work insidiously through the local government, slowly eroding public trust over several years.

• The software update insidiously tracked user data in the background without asking for explicit permission.

Synonyms of insidiously

Words with a similar meaning to insidiously:

• slyly
• stealthily
• treacherously
• perniciously

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