Proficiency : পারদর্শিতা, দক্ষতা, উন্নতি;
Related Words
profi ciency  proficiencies  proficiency  See Words Also In
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Appropriate Prepositions
Bask in(রোদ পোহানো): The boys and girls are basking in the sun right now.
Convince of(বিশ্বাস হওয়া): I am convinced of your efficiency.
Convinced of (আশ্বস্ত): You are convinced of his product.
Crave for(আকাঙ্ক্ষা করা): Everyone craves for care.
Independent of (স্বাধীন): They are independent of my health.
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Idioms
At ease (in peace or pleasure – শান্তিতে বা আরামে) A man who has enemies can not live at ease.
At random (indiscriminately—এলোপাথাড়ি-adv.) He talks at random like a mad man.
Gain Ground (সুবিধা পাওয়া): The wise are said to gain the ground in the long run.
Man of letters (পন্ডিত ব্যক্তি): You are truly a man of letters.
Tooth and nail (strongly, প্রবলভাবে)-He fought tooth and nail against his enemy.