Efficacy : ফলপ্রসূতা; কার্যক্ষমতা; নিশ্চিত ফলদানের ক্ষমতা;
Related Words
efface  efficacious  efficacy  effigy  See Words Also In
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Appropriate Prepositions
Care of(যত্ন নেওয়া): You should take care of your health.
Devote to (উৎসর্গ করা/নিয়োজিত করা): Students should devote sufficient time to their studies.
Entrust to (কাউকে কোনো কিছু বিশ্বাস করে দেওয়া): He entrusted the thing to me.
Informed of (অবহিত): I was not informed of your misfortune.
Welcome to (স্বাগত জানানো): You are welcome to our new office.
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Idioms
At the latest (খুব বেশি দেরী হলে) He will arrive here at 5 p. m. at the latest.
At the eleventh hour (at the last moment-শেষ মুহুর্তে adv.) The patient was in a dangerous condition and the doctor came at the eleventh hour.
Let loose (বল্গাহীনভাবে ছেড়ে দেয়া): He let his horse loose in the field.
Seventh heaven – (মহাখুশী) – I was in the seventh heaven when I heard the news of my BCS final result.
Well-to-do (সঙ্গতিপূর্ণ) - He was not born in a well-to-do family.