In validity : দুর্বলতা; অকার্যকরতা;
Related Words
immovability  in validity  inability  invalid  invalidate  invalidated  invalidating  invalidism  invalidity  See Words Also In
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Appropriate Prepositions
Acceptable to(গ্রহণযোগ্য): Such behavior is just not acceptable in this school.
Anxious for (কারোর ব্যাপারে চিন্তিত): Sabbir was anxious for her.
Cope with (এঁটে ওঠা; তাল মিলিয়ে চলা): They cannot cope with so much work.
Hope for (আশা করা): Let us hope for the best.
Perfect for (সঠিক, মানানসই): The new book is perfect for you.
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Idioms
Black sheep - (কুলাঙ্গার): Stay away from the Black sheep.
Fight shy (এড়িয়ে চলা): Why do you fight shy of your teacher?
Lump sum (এক কালীন) — He gave us lump sum money.
Red letter day (স্মরণীয় দিন): The 16th December is a red letter day for us.
Three R's (প্রাথমিক শিক্ষা)— He has not yet learnt the three R's.