If "kalank" refers to a blemish or stain on one's reputation:
* शुभ (shubh) - meaning auspicious, fortunate, or good.
* सम्मान (samman) - meaning honor, respect.
* कीर्ति (kirti) - meaning fame, glory, reputation.
If "kalank" refers to a physical mark or defect:
* सुंदरता (sundarta) - meaning beauty.
* पूर्णता (poornata) - meaning perfection, completeness.
* निर्दोष (nirdosh) - meaning flawless, innocent.
If "kalank" refers to a misfortune or bad omen:
* शुभ (shubh) - meaning auspicious, fortunate, or good.
* सौभाग्य (saubhagya) - meaning good fortune, luck.
* कल्याण (kalyan) - meaning welfare, prosperity.
It's important to consider the context of the sentence to choose the most appropriate opposite word.