Catalyst : অনুঘটক;
Related Words
catalectic  catalyst  catalysts  See Words Also In
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Appropriate Prepositions
Adequate for(পর্যাপ্ত): The loan given by the bank is not adequate for the farming project.
Depend on (নির্ভর করা): Presently, the students depend on/upon guide books.
Fantasize about (কল্পনা করা): They fantasized about winning the lottery.
Free from (মুক্ত): He is now free from danger.
Innocent of (নির্দোষ): The maid servant was proved innocent of the alleged theft.
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Idioms
At random (indiscriminately—এলোপাথাড়ি-adv.) He talks at random like a mad man.
Beggar description - (অবর্ণনীয় হওয়া): The distress of the Muslims in Bosnia beggars description.
To the utmost (যথাসাধ্য) - I tried to the utmost of my ability to have a job.
Ups and downs (উত্থান পতন): There are ups and downs in a man’s life.
Without fail (অবশ্যই) - You must attend the meeting without fail.