Black-hearted : ক্রুরহৃদয়; ক্রূরমতি; ক্রূর;
Related Words
black-hearted  blackguard  See Words Also In
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Appropriate Prepositions
Aware of(অবগত): I am not aware of his dishonesty.
Dressed in (সজ্জিত, পরিহিত): The girl was dressed in silk.
Hatred for (ঘৃণা): I have no hatred for anyone.
Relation with (সম্পর্ক): I have no relation with the culprit.
Short of (অপর্যাপ্ত): I am running short of money.
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Idioms
All up with - (পুরোপুরি, হতাশ, সব আশা শেষ): If we can't, it's all up with the councillor.
At a round rate (at the fixed price – নির্ধারিত মূল্যে) Things are selling in the shop at a round rate.
In a nutshell (সংক্ষেপে): Tell the whole story in a nutshell.
Look into something (তদন্ত করা- investigate) - The manager looked into the matter.
Tooth and nail (তীব্রভাবে): He fought tooth and nail for the sake of country.