Challenge : বৈধতায় সন্দেহ প্রকাশ (করা); প্রতিদ্বতায় আহবান করা, পরিচয় দাবি করা
Related Words
call names  calling  calling on  calling up  callings  callowness  calming  celling  challenge  challenged  challenger  challenges  challenging  chilling  chillness  clanged  cleanse  coaling  culling  See Words Also In
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Appropriate Prepositions
Agree with, on, to(একমত হওয়া): My father agreed with me on this point, but he did not agree to my proposal to set up a canteen.
Conform to (নিয়মনীতি অনুসরণ করা): The employees have to conform to a strict dress code.
Fatigued by (ক্লান্ত): He was fatigued by hard work.
Smile on/upon (অনুগ্রহ করা): Fortune smiles on/upon the brave.
Solution to (সমাধান): None can solution to every problem.
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Idioms
Fair play (প্রতারণা বিহীন নীতি বা কাজ): I believe in the practice of fair play in my business.
In a nutshell (সংক্ষেপে): Tell the whole story in a nutshell.
Three score (ষাট): He is happy as his brother got three score.
Ups and downs (উত্থান পতন)- There is ups and downs in a man's life.
Widow’s mite (দরিদ্রের ক্ষুদ্র দান): A windows mite is no less important than a large contribution of a rich man.