Old hand : পাকা কারিগর; ওস্তাদ লোক; দক্ষ; অভিজ্ঞ;
Related Words
old hand  old maid  See Words Also In
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Appropriate Prepositions
Argue with, about(কথা কাটাকাটি করা): They always argue with me about tiny matter.
Attentive to(মনোযোগী): He is attentive to his business.
Break in (কথার মাঝে কথা বলা): As she was talking, he suddenly broke in, saying, ‘that’s a rat!’
Caution against(সাবধান): Take all cautions against the danger.
Sad at (দুঃখিত): All his colleagues were very sad at his transfer from this place.
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Idioms
Burning question - (গুরুত্বপূর্ন বিষয়): Poverty problem is a burning question of our country.
Make head or tail – (মাথামুন্ডু বুঝা) – I cannot make head or tail of what you say.
Out of temper (ক্রুদ্ধ): The teacher is out temper to see the overall results.
Run short (কমতি পড়া) —I ran short of money.
Three R's (প্রাথমিক শিক্ষা)— He has not yet learnt the three R's.