Thrash out(phrasal verb)
(To talk over thoroughly and vigorously in order to reach a decision, conclusion, or understanding; discuss exhaustively.)
Hindi meaning:कटु आलोचना करना
Synonyms: Argue, Criticize, Maul, Carp, Pillory, Reprove, Condemn
Antonyms: Praise, Extol, Flatter, Glorify, Eulogize, Panegyrize
Example: Commissioners will thrash out how much phone companies can charge their competitors for using their lines in various ways.
Trick to remember: Out hokar thrash out kiya. 
