Correct option is A
The correct antonym of the given word "irreproachable" is (a) "impeachable."
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Irreproachable means beyond criticism; faultless.
Meaning of the given word in Hindi: निर्दोष
Example: His conduct in office was irreproachable.
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Impeachable refers to something that can be criticized or accused of wrongdoing.
Hindi Meaning: दोषारोपण योग्य
Example: The official's actions were deemed impeachable.
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Antonyms: blameworthy, impeachable, culpable.
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Synonyms: blameless, flawless, impeccable.
Meanings of all the other given options:
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Unstable (अस्थिर): not stable; not firm or firmly fixed; likely to fall or collapse.
Example: The bridge is unstable and could collapse at any moment.
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Inaccessible (दुर्गम): unable to be reached.
Example: The remote village was inaccessible by road.
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Inconsistent (असंगत): not staying the same throughout.
Example: His statements to the police were inconsistent.