Unbacked : অনবলম্ব; অনবলম্বন; সমর্থনহীন; পৃষ্ঠপোষকহীন;
Related Words
un biased  un packed  unabashed  unaffected  unbacked  unbaked  unbiased  unbiassed  unpacked  unpicked  unvoiced  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.
Associate with, in(জড়িত হওয়া): This man was associated with crime.
Caution against(সাবধান): Take all cautions against the danger.
Long for (আশা করা/কামনা করা): He longed for name and fame.
Quick at (চটপটে): A cashier must be quick at figures.
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Idioms
Fair play (প্রতারণা বিহীন নীতি বা কাজ): I believe in the practice of fair play in my business.
Hush money (ঘুষ): He offered a hush money to disclose the file.
In a nutshell (সংক্ষেপে): Tell the whole story in a nutshell.
Pick a quarrel (ঝগড়া করা)—Do not pick a quarrel.
To the contrary (against what some one had said, পক্ষান্তরে) —He said nothing to the contrary.