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insidious

adjective

/ɪnˈsɪdiəs/

Meaning

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

The insidious spread of misinformation can damage trust.

stealthy, subtle, harmful, dangerous, deceitful

harmless, obvious, safe

insidious disease, insidious influence, insidious spread

feeling worried, nervous, or uneasy about something

relating to heaven; extremely pleasant or beautiful

strongly infatuated or obsessed with someone or something

in a state of confusion, disorder, or upside down

Lasting for a very short time.

successful in material terms; flourishing financially or in general well-being