Efficacy : ফলপ্রসূতা; কার্যক্ষমতা; নিশ্চিত ফলদানের ক্ষমতা;
Related Words
efface  efficacious  efficacy  effigy  See Words Also In
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Appropriate Prepositions
Appoint to(নিযুক্ত করা/হওয়া): Kibria has been appointed to the post of Headmaster.
Bark at(ঘেউ ঘেউ করা): The dog is barking at the strange woman.
Rebel against (বিদ্রোহ করা): The soldiers rebelled against the king.
Short of (অপর্যাপ্ত): I am running short of money.
Shout at (চিৎকার করে ডাকা): Do not shout at your parents.
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Idioms
Bring to light (disclose-প্রকাশ করা) The police brought the secret to light.
Bad book (disfavour-খারাপ নজর —n) The secretary has fallen in the bad book of the manager.
Give one’s right arm (বিপদের ঝুকি নেয়া): I will give my right arm if I could manage the tickets.
Red letter day (স্মরণীয় দিন): The 16th December is a red letter day for us.
Set something right (ঠিক করা)— He will set the machine right.