Unmaintainable : অচল;
Related Words
un attainable  unattainable  undeniable  unmaintainable  unmentionable  untamable  untameable  untenable  See Words Also In
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Appropriate Prepositions
Affection for(স্নেহ): She has a great affection for the child.
Convenient to(সুবিধাজনক): The work is convenient to your nature.
Cope with (এঁটে ওঠা; তাল মিলিয়ে চলা): They cannot cope with so much work.
Debar from (বঞ্চিত হওয়া/বাধা দেওয়া): He is debarred from getting a job.
Fed up with (বিরক্ত): He is fed up with waiting for her.
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Idioms
Foul play (অসদাচারণ করা): We feared that he had met with foul play.
Man of letters (পন্ডিত ব্যক্তি): You are truly a man of letters.
Red tape (official formalities, অফিসের কাজ)— You would not believe the red tape involved in getting the required permits.
Ups and downs (উত্থান পতন): There are ups and downs in a man’s life.
Worthy of (যোগ্য) - He is worthy of a good job.