Tough : শক্ত; কঠোরতা সইতে পারে এমন;
Related Words
though  thug  to hug  to weigh  tog  toga  togs  too high  tosh  touch  touches  touchy  tough  tous  tug  tugs  tush  See Words Also In
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Appropriate Prepositions
Answer for(কোনো কারনে জবাবদিহি করা): He will have to answer for his misdeeds.
Devoted to (মনোযোগী): He is devoted to music.
Grateful to (কৃতজ্ঞ): We should be grateful to our teachers.
Infested with (অতিষ্ঠ): The room is infested with rats.
Short of (অপর্যাপ্ত): I am running short of money.
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Idioms
All along - (সব সময়): I was present in the meeting all along.
At a round rate (at the fixed price – নির্ধারিত মূল্যে) Things are selling in the shop at a round rate.
As a whole (মোটের উপর, সম্পূর্ন এক মনে করে-adv.) Look at life as a whole and you will see that it is meaningful.
Make hay while sun shines (ঝোপ বুঝে কোপ মারা) You should try to make hay while sun shines.
Weal and woe (সুখ-দুঃখ): Human life is full of weal and woe.