Incontestable : অকাট্য; তর্কাতীত; সন্দেহাতীত; প্রশ্নাতীত; অবিসংবাদী; নিশ্চিত;
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Appropriate Prepositions
Apply to (কারো কাছে আবেদন করা): He applied to the principal for free admission.
Behave towards(ব্যবহার করা): The students behaved objectionably towards the Head teacher.
Control over(নিয়ন্ত্রণ): He has no control over his sons.
Good for, at (ভাল): This man is good for nothing. He is good at English.
Indispensable to (অত্যাবশ্যকীয়): Your help is indispensable to him.
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Idioms
Burning question - (গুরুত্বপূর্ন বিষয়): Poverty problem is a burning question of our country.
In lieu of (পরিবর্তে): Give me this pen in lieu of that.
Ins and out (খুঁটিনাটি): I know ins and outs of this file.
Lion’s share (বড় মাপের অংশ): He took the lion’s share of the profit.
Red tape (official formalities, অফিসের কাজ)— You would not believe the red tape involved in getting the required permits.