Unaware : জ্ঞাত নয় এমন, অজ্ঞাত;
Related Words
unaware  unwary  See Words Also In
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Appropriate Prepositions
Abhorrence of (ঘৃণা): Everyone should have abhorrence of a par.
Attain to (লাভ করা): He will not attain to his objective so soon.
Attention to(মনোযোগ): He has no attention to his studies.
Penalty for, with (দণ্ড, জরিমানা): She has paid the penalty for the misuse of power with two years in prison.
Thirst for (তৃষ্ণা, আকাঙ্ক্ষা): A wise man has no thirst for wealth.
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Idioms
At random (indiscriminately—এলোপাথাড়ি-adv.) He talks at random like a mad man.
Fair play (প্রতারণা বিহীন নীতি বা কাজ): I believe in the practice of fair play in my business.
In black and white – (লিখিতভাবে) – Put forward your proposal in black and white.
Out of temper (ক্রুদ্ধ): The teacher is out temper to see the overall results.
Weal and woe (সুখ-দুঃখ): Human life is full of weal and woe.