Doubtless : নিঃসন্ধেহে;
Related Words
doubtless  doubtlessly  See Words Also In
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Appropriate Prepositions
Averse to (বিমুখ): Rahim was averse of your various problems.
Congratulate on(অভিনন্দন জানানো): They congratulated me on my brilliant success.
Dedicate to (উৎসর্গ করা): His pfe is dedicated to the welfare of the country.
Die of, for, from (মারা যাওয়া): He died of cholera. He died for his country. He died from an injury.
Genius for (দক্ষতা): Nazrul had a genius for convincing girls.
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Idioms
At least (in the lowest estimate- কমপক্ষে) He is the owner of thirty lakh taka at least.
Foul play (অসদাচারণ করা): We feared that he had met with foul play.
In vogue (চালু): This custom is not in vogue at present.
Red tape (official formalities, অফিসের কাজ)— You would not believe the red tape involved in getting the required permits.
Three R's (প্রাথমিক শিক্ষা)— He has not yet learnt the three R's.