Sine qua non : অপরিহার্য শর্ত;
Related Words
sine qua non  sine quanon  sinequanon  See Words Also In
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Appropriate Prepositions
Adjacent to (সন্নিহিত): His house was adjacent to the bridge.
Antipathy to/towards (ঘৃনা): I have a strong antipathy to smoking.
Arrive at(উপস্থিত হওয়া, পৌছানো): The train arrived at Dhaka station on time.
Attain to (লাভ করা): He will not attain to his objective so soon.
Sanguine of (নিশ্চিত বা আশান্বিত): Be sanguine of your success.
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Idioms
Arm in arm (পরস্পর সম্পর্কিত বিষয়) All good people should live arm in arm with one another.
At times (মাঝে মাঝে): He at times comes here.
Bad blood - (শত্রুতা): There has always been bad blood between these families.
Safe and sound (নিরাপদে)— He reached home safe and sound.
To the backbone (to the core, হাড়ে হাড়ে) —The boy is wicked to the backbone.