Specialist : বিশেষজ্ঞ; দক্ষ; বা বিশারদ;
Related Words
special ization  specialisation  specialised  specialist  specialists  specialization  specialized  See Words Also In
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Appropriate Prepositions
Akin to(সমজাতীয়): These are akin to one another.
Alarm at, by, for(আশংকা করা/শঙ্কিত হওয়া): I was not alarmed at/by the news, but I was alarmed for their safety.
Bound for(প্রস্তুত থাকা): Although we can see that it is bound for failure, it is fascinating to follow its journey.
Destitute of (নিঃস্ব; বিবর্জিত): He is destitute of any friend here.
Worry about (কোনো কিছু বা কাউকে নিয়ে উদ্বিগ্ন হওয়া): Please, don’t worry about me. I will be alright.
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Idioms
At a low ebb (in an unfavorable situation প্রতিকুল অবস্থায়, ভাটির মুখে) The popularity of this singer is now at a low ebb.
Bring to book (reproach-Start- ভর্ৎসনা করা) The father brought his son to book for his failure in the exam.
To play on a fiddle (অনর্থক সময় নষ্ট করা - To waste time)-He played on a fiddle by nature.
Silver living (hope- আশা বা ভালো দিক): Every cloud has a silver lining.
Well-to-do (সঙ্গতিপূর্ণ) - He was not born in a well-to-do family.