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1984

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Thought Crime is Insidious

1984-JN0LMZ

"Thought crime is a dreadful thing, old man," he said sententiously. "It's insidious. It can get hold of you without your even knowing it."

Based on the context of the quote, what is the BEST meaning for the word insidious?

A

Flawless.

B

Deceptive.

C

Upfront.

D

Obvious.

E

Observable.