impertinent(adjective) : not showing proper respect; rude.

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innocuous(adjective) : not harmful or offensive.

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laconic(adjective): (of a person, speech, or style of writing) using very few words.

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upbraid(verb) :find fault with (someone); scold.

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auspicious(adjective): conducive to success; favourable.

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I hope this helps you if you are preparing for GRE exams.