Penetrating : তীক্ষ্ন, তীক্ষ্ণবুদ্ধি;
Related Words
penetrating  penetrations  See Words Also In
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Appropriate Prepositions
Associate with, in(জড়িত হওয়া): This man was associated with crime.
Full of (পরিপূর্ণ): Our Rivers are full of fishes.
Indulge in (আসক্ত): You should not indulge in social media.
Look at (তাকানো): Students look at the blackboard.
Smile on/upon (অনুগ্রহ করা): Fortune smiles on/upon the brave.
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Idioms
Carry the day (জয়লাভ করা) The boys carried the day in the debate competition.
Dead of night (মধ্যরাত্রি): The robbers broke into the house at dead of night.
Fall flat (ফলপ্রসূ না হওয়া): This business is going to fall flat.
Out of date (সেকেলে): This fashion is out of date.
Rank and file (সাধারণ লোক): We should pay attention to the rank and file of the country.