Inefficacy : নিষ্ফলতা; ফলদানে অক্ষমতা; কার্যকারিতার অভাব; গুণের অভাব;
Related Words
ineffaceable  ineffcacious  ineffectual  inefficacious  inefficacy  inefficiencies  inefficiency  inefficient  inofficial  See Words Also In
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Appropriate Prepositions
Admit of(স্থান করা, সুযোগপ্রাপ্ত হওয়া): His offence admits of no explanation.
Assent to(সম্মতি দেওয়া): The President has assented to the bill.
Careless of(অসতর্ক): Do not be careless of your health.
Consolidate for (শক্তিশালী করা): The four new companies consolidated for greater efficiency.
Deal in (কোনো কিছুর ব্যবসা করা): They deal in green vegetables.
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Idioms
At the latest (খুব বেশি দেরী হলে) He will arrive here at 5 p. m. at the latest.
Cock and bull story (আষাঢ়ে গল্প): You must be ashamed of your cock and bull story.
Dead of night (মধ্যরাত্রি): The robbers broke into the house at dead of night.
Kith and kin (নিকট আত্মীয়): He has no relation with his kith and kin.
Lose one’s heart (প্রেমে পড়া) — He lost his heart to the girl.