Meaning : Cover up a misdemeanor, fault, or error.
Example :
Let's not whitewash the crimes of Stalin.
She tried to gloss over her mistakes.
Synonyms : gloss over, hush up, whitewash
Sleek over ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Marathi. Sleek over ka matlab kya hota hai?