Correct option is D
The correct antonym of the given word is
Auspicious.
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Sinister: Refers to something that seems evil, menacing, or likely to bring harm.
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Hindi Meaning: अशुभ, बुरा
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Antonym -
Auspicious: Refers to something favorable, promising success, or bringing good luck.
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Hindi Meaning: शुभ, मंगलकारी
Additional Synonyms of Sinister: Malevolent, Ominous, Threatening, Foreboding.
Antonyms of Sinister:
Favorable, Beneficial, Propitious, Fortunate.
Meanings of Other Options:
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Malevolent: Having or showing a wish to do evil to others.
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Hindi Meaning: द्वेषपूर्ण
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Right: Conforming to fact, reason, or a moral standard; correct.
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Hindi Meaning: सही
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Sinful: Wicked or immoral; characterized by sin.
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Hindi Meaning: पापपूर्ण
Thus,
Auspicious is the most suitable antonym, as it conveys a positive or favorable sense, contrasting with the negativity of
Sinister.