Duff(adjective)
(Of very poor quality/ of low standard or quality.)
Hindi meaning:घटिया
Synonyms: Second-Rate, Substandard, Low-Quality, Low-Grade, Flawed, Unsound, Poor
Antonyms: Superior, Better, First-Rate
Example: Duff drugs are not strong enough to cure the disease.
Trick to remember: Duffer ban jate hai duff study material ke sath. 
