Unaccountably : অকারণে; অকারণ;
Related Words
unaccountable  unaccountably  uncountable  See Words Also In
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Appropriate Prepositions
Afraid of(ভীত): An honest man is not afraid of telling the truth.
Bridge over (সেতু): The only entrance to Allahabad in that direction was by a bridge over the Jumna.
Enter into (আলোচনা করতে আরম্ভ করা): Let’s not enter into details at this stage.
Feed on (খেয়ে বাঁচা): The cow feeds on grass.
Sanguine of (নিশ্চিত বা আশান্বিত): Be sanguine of your success.
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Idioms
At all (in the least degree – মোটেও না) There is no water at all in the pond.
As ill-luck would have it (unfortunately- দুর্ভাগ্যবশত) A child was born to them but, as ill-luck would have it, it died when it was eight days old.
Back and forth (এদিক ওদিক) The mad man was running back and forth in the hospital.
Seventh heaven – (মহাখুশী) – I was in the seventh heaven when I heard the news of my BCS final result.
Under age (অপ্রাপ্ত বয়স্ক)- He could not cast his vote because he was under age.