Gratuitously : অবাঞ্ছিতভাবে; অযৌক্তিকভাবে; বিনা পয়সায়; বিনা দক্ষিণায়;
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Appropriate Prepositions
Enter into (আলোচনা করতে আরম্ভ করা): Let’s not enter into details at this stage.
Greed for (লোভ): He has an indomitable greed for wealth.
Inferior to (নীচু/হীন): He is inferior to his neighbor.
Look up (ডিকশনারি থেকে শব্দার্থ খোঁজা): He is looking up a new word meaning from dictionary.
Play at (খেলা): I do not play at cards.
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Idioms
All along - (সব সময়): I was present in the meeting all along.
At ease (in peace or pleasure – শান্তিতে বা আরামে) A man who has enemies can not live at ease.
Put up with (সহ্য করা - tolerate): I could not put up with his behavior.
Rank and file (সাধারণ লোক): We should pay attention to the rank and file of the country.
To the letter (in all details, অক্ষরে অক্ষরে) —Follow my advice to the letter.