insidious

[inˈsidjəs]

insidious Definition

• 1. proceeding in a gradual, subtle way, but with harmful effects
• 2. treacherous; crafty

Using insidious: Examples

Take a moment to familiarize yourself with how "insidious" can be used in various situations through the following examples!

• Example

  The insidious effects of pollution on our health are often overlooked.

• Example

  The insidious nature of the disease made it difficult to diagnose.

• Example

  He had an insidious plan to take over the company.

• Example

  The insidious propaganda was designed to manipulate public opinion.

insidious Synonyms and Antonyms

Synonyms for insidious

• cunning
• deceptive
• sneaky
• pernicious
• subtle

Antonyms for insidious

• obvious
• blatant
• honest

Idioms Using insidious

• the insidious march of time

  the gradual and inevitable passing of time, which can have negative effects on people or things

  Example

  As we age, we become more aware of the insidious march of time and its impact on our bodies and minds.

• an insidious threat

  a threat that is not immediately obvious, but has the potential to cause great harm

  Example

  Climate change is an insidious threat that requires urgent action.

• an insidious rumor

  a rumor that spreads gradually and subtly, often causing harm to the person or group it targets

  Example

  The insidious rumor about her personal life caused her a lot of distress.

Phrases with insidious

• insidious disease

  a disease that progresses slowly and is often not detected until it has reached an advanced stage

  Example

  Cancer is an insidious disease that can be difficult to treat.

• insidious influence

  an influence that is gradual and subtle, but has a negative effect

  Example

  The insidious influence of social media on young people's mental health is a growing concern.

• insidious behavior

  behavior that is sneaky or underhanded, often with harmful intentions

  Example

  His insidious behavior towards his colleagues eventually got him fired.

Origins of insidious

from Latin 'insidiosus', meaning 'deceitful'

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Summary: insidious in Brief

'Insidious' [inˈsidjəs] describes something that proceeds in a gradual, subtle way, but with harmful effects. It can refer to diseases, influences, behaviors, or threats that are not immediately obvious, but can cause great harm. Examples include 'The insidious effects of pollution on our health are often overlooked,' and 'The insidious propaganda was designed to manipulate public opinion.' 'Insidious' is often used in idioms like 'the insidious march of time,' referring to the gradual and inevitable passing of time.