Who so ever : যে কেহ; যে কোনও ব্যক্তি; যে-কেহ;
Related Words
which ever  who so ever  whosoever  See Words Also In
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Appropriate Prepositions
Angry for (কোন কাজে রাগান্বিত হওয়া): Rahim was angry with me for my having done this.
Count on/upon (নির্ভর, বিশ্বাস করা): Rahim count on (upon) my help.
Derive from (উৎসারিত হওয়া): The one has been derived from the poem.
Look after (দেখাশুনা): He looks after me.
Road to (উপায়/ রাস্তা): There is no easy road to learning.
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Idioms
At a snail's pace (very slowly – খুব ধীর গতিতে) The economy of Bangladesh is growing at a snail’s pace.
At least (in the lowest estimate- কমপক্ষে) He is the owner of thirty lakh taka at least.
Be all and end all (the ultimate out come- চরম পরিণতি—n) A loss of one million taka was the be all and end all of the projects.
In one’s teens (তের থেকে উনিশ বছর বয়সের মাঝে): She is yet in her teens.
Of course (অবশ্যই): Of course, you know what that meant.