insidious
proceeding in a gradual, harmful way that is hard to detect
Word origin: From Latin insidiae, ambush, from insidere, to sit in wait.
Insidious in a sentence
Here are example sentences showing insidious in a sentence.
The disease is insidious, causing irreversible damage before symptoms appear.
The corrosion was insidious, advancing unseen within the pipes until the structure suddenly failed.
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Verbal · Sentence Equivalence
The negotiator's reputation for blank served her well: rivals who tried to outwait her invariably found that she had already anticipated their stalling and arranged a fallback months in advance.
Using “insidious” well
Insidious stresses harm that develops gradually and stealthily, so its danger is hidden until too late, which sets it against obvious and harmless.
More GRE words starting with I
a person who attacks cherished beliefs or established institutions
attacking or undermining traditional beliefs and institutions
guided by ideals rather than by practical considerations
a peculiar habit or feature distinctive to an individual
excessively or blindly devoted to something or someone
extreme admiration or worship of someone or something, often to an excessive degree
to admire or revere someone to an excessive degree
charmingly peaceful and free of trouble
Questions about “insidious”
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