Ameliorate(verb)
To make better something that was bad or not good enough.
Hindi meaning:सुधारना
Synonyms: Improve, Better, Amend, Refine
Antonyms: Worsen, Exacerbate, Deteriorate
Example: The new laws were designed to ameliorate the problem of chronic debt.
Trick to remember: Amla or imli ka rate ab ameliorate ho gaya 
