Awhiteelephant : অত্যন্ত ব্যয়সাপেক্ষ বিলাসিতা;
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a white elephant  awhiteelephant  See Words Also In
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Appropriate Prepositions
Answer for(কোনো কারনে জবাবদিহি করা): He will have to answer for his misdeeds.
Associate with, in(জড়িত হওয়া): This man was associated with crime.
Attacked with(আক্রান্ত): He is attacked with …
Plead for (ওকালতি করা): He pleads for justice.
Remedy for (প্রতিকার): There is no remedy for cancer.
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Idioms
In the wake of (ঠিক পরে): Police came in the wake of the accident.
Of course (অবশ্যই): Of course, you know what that meant.
Out of date (সেকেলে): This fashion is out of date.
Seventh heaven – (মহাখুশী) – I was in the seventh heaven when I heard the news of my BCS final result.
Set something right (ঠিক করা)— He will set the machine right.