Lesson

Title: Insidious

Grade: 10-a Lesson: S2-L2

Explanation: Let us learn new words today with meanings, synonyms, antonyms, parts of speech, and sentences using the word.

Definition: Insidious

Explanation: Something that is slowly and secretly causing harm.

Pronounciation:

Parts Speech: Adjective.

Origin: Latin word.

Usage: The insidious spread of the disease went unnoticed for months.


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