Strenghen : শক্তিশালী বা অধিকতর শক্তিশালী করা অথবা হওয়া;
Related Words
strenghen  stringency  stringent  stringing  strong man  strongman  See Words Also In
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Appropriate Prepositions
Aim at(আঘাত করার জন্য লক্ষ্য স্থির করা): The hunter aimed at the tiger.
Cast aside (ছুঁড়ে ফেলা): As soon as they become rich they cast aside their poor friends.
Deaf to, of, in (না শোনা, বধির হওয়া): The boy is deaf to his father’s advice. This man is deaf of/in one ear.
Qualified for (যোগ্য প্রতিপন্ন হওয়া): No candidate was properly qualified for the post.
Relevant to (প্রাসঙ্গিক): Your answer is not exactly relevant to my question.
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Idioms
Fight shy (এড়িয়ে চলা): Why do you fight shy of your teacher?
Foul play (অসদাচারণ করা): We feared that he had met with foul play.
In cold blood (ঠান্ডা মাথায়): They committed this murder in cold blood.
Lion’s share (বড় মাপের অংশ): He took the lion’s share of the profit.
Up and doing (উদ্যোগী): Be up and doing and then you will succeed in your life.