Invalidate : বাতিল করা; অসিদ্ধ করা; ব্যর্থ করা;
Related Words
in validity  inabilities  inability  inflate  inflated  inflates  invalid  invalidate  invalidated  invalidating  invalidism  invalidity  inviolate  involute  involuted  See Words Also In
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Appropriate Prepositions
Indulge in (প্রশ্রয় দেওয়া): You should not indulge in idleness.
Object to (প্রতিবাদ করা): Many people objected to the remarks of the leader.
Rejoice at/in (আনন্দ করা): Everybody rejoiced at/in his success.
Road to (উপায়/ রাস্তা): There is no easy road to learning.
With a view to (উদ্দেশ্য): I went to hospital with a view to seeing you.
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Idioms
Breathe one’s last (decease, die- শেষ নিঃশেষ ত্যাগ করা, মরে যাওয়া) The man breathed his last in his native village.
Crying need (জরুরী): Mass education is a crying need for India.
Fight shy (এড়িয়ে চলা): Why do you fight shy of your teacher?
Pass sth/sb off as sth/sb (মিথ্যা পরিচয় দেয়া; Pretend – ভান করা): They were trying to pass off these shirts as genuine Armani.
Slow coach (অলস): You cannot expect much from a slow coach.