Unaware : জ্ঞাত নয় এমন, অজ্ঞাত;
Related Words
unaware  unwary  See Words Also In
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Appropriate Prepositions
Aim at(আঘাত করার জন্য লক্ষ্য স্থির করা): The hunter aimed at the tiger.
Careful of (সতর্ক): He is very careful of his fault.
Certain of(নিশ্চিত): Jamal is certain of his success.
Cure of, for(রোগমুক্ত হওয়া): This man was cured of This drug is a cure for typhoid.
Detrimental to (অপকারী): Smoking is detrimental to health.
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Idioms
After all - (সব কথার পরেও): I rang and told her I couldn't come after all.
Crying need (জরুরী): Mass education is a crying need for India.
Die in harness (কর্মরত অবস্থায় মারা যাওয়া): Dr. Sen died in harness.
Of course (অবশ্যই): Of course, you know what that meant.
Weal and woe (সুখ-দুঃখ): Human life is full of weal and woe.