Demonology : পিশাচতত্ত্ব; ভৌতিক বিদ্যা;
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Appropriate Prepositions
Adept in (দক্ষ): He is adept in playing football.
Caution against(সাবধান): Take all cautions against the danger.
Comply with(মেনে নেওয়া): The clerks must comply with the orders of their officer.
Contrary to(বিপরীত, পরিপন্থী): Students should not act contrary to the rules of discipline.
Noted for (বিখ্যাত): She is noted for dancing.
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Idioms
At one’s elbow (near at hand — হাতের কাছে – adv.) His private secretary is always at his elbow.
Crying need (জরুরী): Mass education is a crying need for India.
Man of straw (অপদার্থ): We do not care for a man of straw like you.
Sheet anchor (শেষ আশ্রয়; প্রধান অবলম্বন; আসল খুঁটি)— This small piece of land is his sheet anchor.
Turn a deaf ear to (pay no attention, প্রত্যাখান করা) —He turned a deaf ear to my proposal.