ISEE/SSAT Vocabulary Builder›Words›I›insidious
ISEE/SSAThard
insidious
causing harm gradually and without being noticed
Synonyms
- pernicious
- stealthy
- treacherous
Antonyms
- harmless
- obvious
- beneficial
insidious in a sentence
The article examined the insidious effects of repeated misinformation.
The novel portrays prejudice as an insidious force that quietly shapes public policy.
Where it comes from
From Latin insidiosus, meaning 'cunning or deceitful.'
Memory hook
INSIDIOUS harm works INSide before anyone notices it.
Read it in context
- The Unsmoothed Voice Narrative