insidious /in·sid·i·ous/ (-sid´e-us) coming on stealthily; of gradual and subtle development.
Insidious
insidious
in·sid·i·ous ( n-sd  - s)adj. Being a disease that progresses with few or no symptoms to indicate its gravity. in·sid i·ous·ly adv. |
Insidious
Developing in a stealthy or gradual manner. Sydenham's chorea may have an insidious onset.
Mentioned in: Sydenham's Chorea
insidious
[insid′ē·əs]
Etymology: L, insidiosus, cunning
describing a development that is gradual, subtle, or imperceptible. Certain chronic diseases, such as glaucoma, can develop insidiously with symptoms that are not detected by the patient until the disorder is established. Compare acute.
insidious
coming on stealthily; a gradual and subtle development.
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