Invalidating : বাতিল করা; অসিদ্ধ করা; ব্যর্থ করা;
Related Words
inflating  invalidating  See Words Also In
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Appropriate Prepositions
Aware of(অবগত): I am not aware of his dishonesty.
Beg for(অনুরোধ করা): Maria begged the Superintendent for a seat in the school hostel.
Cruise to (জয় লাভ করা): The Bangladesh team cruised to their fifth successive win this afternoon.
Dull at (অপ্টু/কাঁচা): He is dull at mathematics.
Welcome to (স্বাগত জানানো): You are welcome to our new office.
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Idioms
Backstairs influence (secret and illegal influence- গোপন এবং বে আইনী প্রভাব-n) He did not deseve the job, however, he got it by backstairs influence.
Right and left (এলোপাথাড়ি - indiscriminately): He planted trees right and left.
To the point (সঠিক) - The boy answered the question to the point.
Through thick and thin (through all difficulties, সমস্ত সমস্যার মধ্যে)-Ruma followed her husband through thick and thin.
Ups and downs (উত্থান পতন): There are ups and downs in a man’s life.