Thitherto : সেই সময়ের আগে;
Related Words
thereat  thereto  thirty  thitherto  thitherward  See Words Also In
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Appropriate Prepositions
Agree with, on, to(একমত হওয়া): My father agreed with me on this point, but he did not agree to my proposal to set up a canteen.
Devoid of (বিহীন/বর্জিত): He is devoid of common sense.
Famous for (বিখ্যাত): Smith is famous for his wisdom.
Fantasize about (কল্পনা করা): They fantasized about winning the lottery.
Feed with (কোনো কিছু খাওয়া): They feed the cow with grass.
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Idioms
Acid test (অগ্নি পরীক্ষা): You must succeed in the acid test of the time you live in.45
Fair and square (সৎ): The learned persons should be fair and square.
Fair play (প্রতারণা বিহীন নীতি বা কাজ): I believe in the practice of fair play in my business.
In no time (শীঘ্র): He will finish the work in no time.
Now and then (মাঝে মাঝে): He comes here now and then.