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
Based on(প্রতিষ্ঠিত, ভিত্তিক): His information is not based on the correct information.
Deal with (কারো সাথে ব্যবহার বা আচরণ করা): Shahid can deal well with the customers.
Desist from (বিরত থাকা): She desisted from making this.
Quarrel with (ঝগড়া করা): Some girls quarreled with one another.
Rebel against (বিদ্রোহ করা): The soldiers rebelled against the king.
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Idioms
All up with - (পুরোপুরি, হতাশ, সব আশা শেষ): If we can't, it's all up with the councillor.
At-fault (guilty-কিংকর্তব্যবিমূঢ়, অপরাধ, দোষ adj.) You are at fault.
In black and white – (লিখিতভাবে) – Put forward your proposal in black and white.
Silver tongue (মিষ্টভাষী)- He is a man of silver tongue.
Through and through (পুঙ্খানুপুঙ্খু রুপে)- He read the poem through and through.