What is the opposite of 'cordial'?

What is the opposite of 'cordial'? Correct Answer reserved

Cordial - আন্তরিক। Gentle - অমায়িক, নম্র। Ungrateful - অকৃতজ্ঞ। Reserved - সংরক্ষিত, চাপা স্বভাবের, গম্ভীর। Hearty - আন্তরিক।

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