In theory : ধারণায়;
Related Words
in another way  in other words  in ter com  in tern  in the air  in the red  in the round  in the world  in theory  in turn  initiatory  inter  intercessory  interim  intermarry  intern  internally  interne  interns  interplay  inters  interse  See Words Also In
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Appropriate Prepositions
Desire for (কামনা): He has no desire for fame.
Eager for, about (একাগ্র): The students for this school are eager for knowledge. The teacher is eager about the success of his students.
Good for, at (ভাল): This man is good for nothing. He is good at English.
Shout at (চিৎকার করে ডাকা): Do not shout at your parents.
Side with (পক্ষ অবলম্বন করা): The Chairman sided with the powerful party.
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Idioms
Hard nut to crack (কঠিন সমস্যা): The problem of adult education is really hard nut to crack.
Moot point (অমীমাংসিত বিষয়): Dowry system is still a moot point in Bangladesh.
Pass away (মারা যাওয়া)— He passed away last night.
Tooth and nail (তীব্রভাবে): He fought tooth and nail for the sake of country.
With a view to (উদ্দেশ্য)- He goes to college with a view to attending the class.