Study Set: +100 FREE English Vocabulary Questions | For TOEFL & IELTS

His eyes stared straight ahead while his hand moved so slowly that the movement was imperceptible.

What is the meaning of the word ‘imperceptible’?

Select the Correct Answer:

Noticeable

Apparent

Readable

Indistinguishable

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+100 FREE English Vocabulary Questions | For TOEFL & IELTS

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