Obligatory : বাধ্যতামূলক, অবশ্যকরণীয়
Related Words
obligatory  See Words Also In
1.Google-Translator 2.Dictionary.com 3.Merriam-Webster 4.Wikipedia 5.Thesaurus.com
Appropriate Prepositions
Apology for (কোনো কারনে ক্ষমা চাওয়া): Sajib should ask apology to her of his mistake.
Astonished at(বিস্ময়-বিহবল হওয়া): We were astonished at his unexpected success.
Hinge on/upon (নির্ভর করা): The whole matter hinges upon this clue.
Hope for (আশা করা): Let us hope for the best.
Relevant to (প্রাসঙ্গিক): Your answer is not exactly relevant to my question.
Browse All Appropriate Prepositions
Idioms
At last (in the end – অবশেষে) He tried hard, and at last, succeeded in achieving his goal.
In a nutshell (সংক্ষেপে): Tell the whole story in a nutshell.
Silver tongue (মিষ্টভাষী)- He is a man of silver tongue.
Speed money (ঘুষ; উৎকোচ): He hankers after speed money.
White color job – (উচ্চ শ্রেনীর চাকরি, যেখানে শারীরিক কাজ নেই বললেই চলে- a job without manual labour) - He wants a white color job.