Keep mum : চুপ করে থাকা; নীরব থাকা; মৌন থাকা;
Related Words
keep in  keep mum  keep on  See Words Also In
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Appropriate Prepositions
Consent to(মত দেওয়া): The Prime Minister consented to the proposal.
Convict of(দোষী সাব্যস্ত হওয়া): The accused person was convicted of the murder.
Faith in (বিশ্বাস): I have no faith in him.
Heir to (উত্তরাধিকার পাওয়া): He is an heir to a vast property.
Sanguine of (নিশ্চিত বা আশান্বিত): Be sanguine of your success.
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Idioms
Pros and cons (খুঁটিনাটি): You should consider the pros and cons of the system.
Right and left (এলোপাথাড়ি - indiscriminately): He planted trees right and left.
Set free (মুক্ত করা): The prisoners were set free.
Stone’s throw (অতি নিকটে): Our school is at a stone’s throw from our house.
To the utmost (যথাসাধ্য) - I tried to the utmost of my ability to have a job.