Unsubstantial : অসার; অবাস্তব; কম্পিত;
Related Words
unsubstantial  unsubstantiality  See Words Also In
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Appropriate Prepositions
Call on(কারও সাথে দেখা করা): I called on him in his office.
Contemporary of (সমসাময়িক): William Wordsworth was a contemporary for greater efficiency.
Look up (ডিকশনারি থেকে শব্দার্থ খোঁজা): He is looking up a new word meaning from dictionary.
Object to (আপত্তি করা): He objected to my proposal.
Plead for (ওকালতি করা): He pleads for justice.
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Idioms
At a round rate (at the fixed price – নির্ধারিত মূল্যে) Things are selling in the shop at a round rate.
Bad book (disfavour-খারাপ নজর —n) The secretary has fallen in the bad book of the manager.
In no time (শীঘ্র): He will finish the work in no time.
Swan-song (অন্তিম গীত, শেষ কর্ম): This writing is the swan song of Kazi Nazrul islam.
Tooth and nail (strongly, প্রবলভাবে)-He fought tooth and nail against his enemy.