Unfaithfulness : অন্যাসক্তি; আনুগত্যহীনতা; বিশ্বাসঘাতকতা; ব্যভিচারিতা;
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Appropriate Prepositions
Busy with(ব্যস্ত থাকা): Rahim is now busy with her homework.
Drop to (নিচে নামানো): Asif dropped his voice to a whisper.
Full of (পরিপূর্ণ): Our Rivers are full of fishes.
Guess at (অনুমান করা): It is difficult to guess at the age of women.
Infested with (অতিষ্ঠ): The room is infested with rats.
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Idioms
Breathe one’s last (decease, die- শেষ নিঃশেষ ত্যাগ করা, মরে যাওয়া) The man breathed his last in his native village.
Give one’s right arm (বিপদের ঝুকি নেয়া): I will give my right arm if I could manage the tickets.
Make head or tail – (মাথামুন্ডু বুঝা) – I cannot make head or tail of what you say.
Tooth and nail (তীব্রভাবে): He fought tooth and nail for the sake of country.
To the backbone (to the core, হাড়ে হাড়ে) —The boy is wicked to the backbone.