Sine qua non : অপরিহার্য শর্ত;
Related Words
sine qua non  sine quanon  sinequanon  See Words Also In
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Appropriate Prepositions
Acquit of (অব্যাহতি দেয়া): The chief justice acquitted him of the charge of murder.
Bar to(বাধা): Poverty is not a bar to happiness.
Consolidate for (শক্তিশালী করা): The four new companies consolidated for greater efficiency.
Look over (পরীক্ষা করা): He was looking over the answer scripts.
Object to (আপত্তি করা): He objected to my proposal.
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Idioms
Acid test (অগ্নি পরীক্ষা): You must succeed in the acid test of the time you live in.45
Red letter day (স্মরণীয় দিন): The 16th December is a red letter day for us.
Square meal (পেট ভরা আহার): He is too poor to have a square meal everyday.
Take one to task (rebuke, তিরস্কার করা)— He took me to task for negligence of duty.
Through thick and thin (through all difficulties, সমস্ত সমস্যার মধ্যে)-Ruma followed her husband through thick and thin.