Sine qua non : অপরিহার্য শর্ত;
Related Words
sine qua non  sine quanon  sinequanon  See Words Also In
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Appropriate Prepositions
Ashamed of(লজ্জিত): Nandini was ashamed of his wrong-doing.
Desire for (কামনা): He has no desire for fame.
Despair of (নিরাশ হওয়া): Do not despair of further improvement.
Greed for (লোভ): He has an indomitable greed for wealth.
Shocked at (মানসিক আঘাতপ্রাপ্ত): Snigdha was terribly shocked at the death of Ratul.
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Idioms
Gain Ground (সুবিধা পাওয়া): The wise are said to gain the ground in the long run.
Right and left (এলোপাথাড়ি - indiscriminately): He planted trees right and left.
Run short (কমতি পড়া) —I ran short of money.
To go to the dogs (গোল্লায় যাওয়া)- He has gone to the dogs by keeping evil company.
Three score (ষাট): He is happy as his brother got three score.