Efficacious(adjective)
Effective in producing the desired result or effect.
Hindi meaning:प्रभावी या सफल परिणाम देने वाला
Synonyms: Effective, Potent, Productive, Powerful
Antonyms: Ineffective, Useless, Inefficient, Weak
Example: The new medicine proved highly efficacious in treating the disease.
Trick to remember: Jo kaam efficiently hota hai, wo hamesha efficacious hota hai — yaani desired result deta hai.
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