Arch enemy : প্রধান শত্রু; শয়তান;
Related Words
arcane  arch angel  arch enemy  arch-enemy  archaean  archangel  archenemy  See Words Also In
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Appropriate Prepositions
Argue over (কোন বিষয়ে তর্ক করা): The kids are arguing over which TV program to watch.
Ask about (কাউকে খোঁজ করা): Rahim asked about Karim.
Ask for (কোনো কিছু চাওয়া): Do not ask him for any help because he doesn’t like to help anyone.
Cause of(কারণ): Industry is the cause of your success.
Concentrate on(কেন্দ্রীভূত করা): Try to concentrate your attention on your studies.
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Idioms
At home (proficient in — দক্ষ) The students of Bangladesh should be at home in Bangla.
Red tape (official formalities, অফিসের কাজ)— You would not believe the red tape involved in getting the required permits.
Three score (ষাট): He is happy as his brother got three score.
Widow’s mite (দরিদ্রের ক্ষুদ্র দান): A windows mite is no less important than a large contribution of a rich man.
Weal and woe (joy and sorrow, সুখ দঃখ) —Human life is full of weal and woe.