Ameliorate : উন্নতি সাধন করা;
Related Words
ameliorate  ameliorated  ameliorates  ameliorating  amelioration  ameliorative  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.
Arrive at(উপস্থিত হওয়া, পৌছানো): The train arrived at Dhaka station on time.
Genius for (দক্ষতা): Nazrul had a genius for convincing girls.
Hope for (আশা করা): Let us hope for the best.
Regard for (সম্মান): Good boys have great regard for their teachers.
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Idioms
Bad blood - (শত্রুতা): There has always been bad blood between these families.
In vogue (চালু): This custom is not in vogue at present.
Irony of fate (ভাগ্যের পরিহাস): He could not succeed by irony of fate.
Slow coach (অলস): You cannot expect much from a slow coach.
To go to the dogs (গোল্লায় যাওয়া)- He has gone to the dogs by keeping evil company.