Unbutton : বোতাম খুলিয়া ফেলা;
Related Words
unbeaten  unbefitting  unbutton  unbuttoned  See Words Also In
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Appropriate Prepositions
Bar to(বাধা): Poverty is not a bar to happiness.
Despair of (নিরাশ হওয়া): Do not despair of further improvement.
Entitled to (অধিকারী): He is entitled to a reward for honesty.
Pleased with (সন্তুষ্ট): Shamim is pleased with all his employees.
Sad at (দুঃখিত): All his colleagues were very sad at his transfer from this place.
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Idioms
At random (indiscriminately—এলোপাথাড়ি-adv.) He talks at random like a mad man.
Lose heart (হতাশ হওয়া) — Do not lose heart in danger.
Rank and file (সাধারণ লোক): We should pay attention to the rank and file of the country.
Round the clock (সমস্ত দিন): He is working round the clock.
With might and main (যথা শক্তি দিয়ে) —He tried with might and main to help me.