The Letter "I" Difficult & Advanced Verbs

The defense attorney sought to ________________ the key witness's testimony by revealing their inconsistent past statements.

The company's decision to dump waste in the river ________________ environmentalists who had organized immediate protests.

The professor's feedback was meant to ________________ critical thinking, not to discourage the student's efforts.

The rebel leader was accused of plotting to ________________ a violent uprising against the government.

 The discovery of new evidence completely ________________ the initial hypothesis; thus forcing the researchers back to the drawing board.