Invalidity : দুর্বলতা; অকার্যকরতা;
Related Words
immovability  in validity  inability  invalid  invalidate  invalidated  invalidating  invalidism  invalidity  See Words Also In
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Appropriate Prepositions
Assent to(সম্মতি দেওয়া): The President has assented to the bill.
Defend against (রক্ষা করা): We will defend our country against all enemies.
Dull of (বধির; কানে শুনে না): He is dull of hearing.
Remedy for (প্রতিকার): There is no remedy for cancer.
Senior to (বয়সে বড়): He is senior to me by two years.
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Idioms
Dead language (যে ভাষা এখন আর কথ্য নয়): Sanskrit is a rich language, but it is now a dead language.
Pick one’s pocket (পকেট মারা)— He tried to pick my pocket.
Swan-song (অন্তিম গীত, শেষ কর্ম): This writing is the swan song of Kazi Nazrul islam.
Take to one's heels (to run away, পালানো)- They took to their heels when they saw the policeman approaching.
Worthy of (যোগ্য) - He is worthy of a good job.