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
Adapt for (উপযোগী করে নেওয়া): This book has been adapted for the children.
Affectionate to(স্নেহশীল): He is very affectionate to his baby.
Afraid of(ভীত): An honest man is not afraid of telling the truth.
Fail in (ব্যর্থ হওয়া): He failed in getting internet connection in his room.
Inquire for (দেখা করতে চাওয়া): He inquires for the manager.
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Idioms
At last (in the end – অবশেষে) He tried hard, and at last, succeeded in achieving his goal.
Back and forth (এদিক ওদিক) The mad man was running back and forth in the hospital.
Bad book (disfavour-খারাপ নজর —n) The secretary has fallen in the bad book of the manager.
Pave the way (সুপ্রসন্ন করা) – I am sure I can pave the way for your success.
To play on a fiddle (অনর্থক সময় নষ্ট করা - To waste time)-He played on a fiddle by nature.