Authenticated : বিশুদ্ধতা প্রমাণ করা;
Related Words
authentic text  authenticate  authenticated  authenticates  authenticating  authenticity  See Words Also In
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Appropriate Prepositions
Apologize to (ক্ষমা প্রার্থনা করা, দুঃখসহ ত্রুটি স্বীকার করা): The student apologized to the Principal for adopting unfair means in the examination.
Composed of(তৈরী): This medicine is composed of vitamins and minerals.
Curse for (অভিশাপ দেয়া): If he ever mistreats my parents, I will certainly curse him for it.
Detrimental to (অপকারী): Smoking is detrimental to health.
Rid of (মুক্তি দেওয়া): He will get rid of troubles soon.
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Idioms
Call to mind (স্মরণ করা): I cannot call to mind your cell number.
Lump sum (এক কালীন) — He gave us lump sum money.
Man of letters (পন্ডিত ব্যক্তি): You are truly a man of letters.
Now and then (মাঝে মাঝে): He comes here now and then.
Widow’s mite (দরিদ্রের ক্ষুদ্র দান): A windows mite is no less important than a large contribution of a rich man.