Efficacious : ফলোৎপাদক; নিশ্চিত ফলপ্রদ
Related Words
efficacious  efficacy  effigies  See Words Also In
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Appropriate Prepositions
Attest to(প্রত্যয়ন করা): I like to attest to your ability.
Averse to (বিমুখ): Rahim was averse of your various problems.
Cast aside (ছুঁড়ে ফেলা): As soon as they become rich they cast aside their poor friends.
Entrust to (কাউকে কোনো কিছু বিশ্বাস করে দেওয়া): He entrusted the thing to me.
Sad at (দুঃখিত): All his colleagues were very sad at his transfer from this place.
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Idioms
All at once - (হঠাৎ): I feel terribly sleepy all at once.
At home (proficient in — দক্ষ) The students of Bangladesh should be at home in Bangla.
Burning question - (গুরুত্বপূর্ন বিষয়): Poverty problem is a burning question of our country.
Pack of lies (ডাঁহা মিথ্যা)—He told pack of lies to prove himself innocent.
Seventh heaven – (মহাখুশী) – I was in the seventh heaven when I heard the news of my BCS final result.