Select the most appropriate synonym of the given word.

Deride

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Abolish

Select the most appropriate synonym of the given word.

Testify

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Vertical

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Retaliate

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ostentatious

Select the option that can be used as a one-word substitute for the given group of words.

To walk aimlessly

Select the most appropriate meaning of the underlined word in the given sentence.

His perverse thoughts were very disturbing so he decided to try seeing a therapist.