Seraph : সর্বোচ্চ শ্রেণীর দেবদূত;;
Related Words
scrap  scrap-heap  scrape  scrappy  seraph  See Words Also In
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Appropriate Prepositions
Alarm at, by, for(আশংকা করা/শঙ্কিত হওয়া): I was not alarmed at/by the news, but I was alarmed for their safety.
Appoint to(নিযুক্ত করা/হওয়া): Kibria has been appointed to the post of Headmaster.
Catch at(ধরা): A drowning man catches at a straw.
Dull at (অপ্টু/কাঁচা): He is dull at mathematics.
Play with (খেলা করা/ মজা করা): I shall not play with him.
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Idioms
At dead of night (গভীর রাতে) The police caught the thief at dead of night.
Burning question - (গুরুত্বপূর্ন বিষয়): Poverty problem is a burning question of our country.
Pass away (মারা যাওয়া)— He passed away last night.
Red tape (official formalities, অফিসের কাজ)— You would not believe the red tape involved in getting the required permits.
Turn down (refuse, প্রত্যাখান করা) —He turned down my proposal.