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
Admit to(ভর্তি করা): The boy was admitted to class Nine.
Angry with(কারো সাথে ক্রুদ্ধ হওয়া): The teacher was very angry with the students.
Cope with (এঁটে ওঠা; তাল মিলিয়ে চলা): They cannot cope with so much work.
Decide upon (সিদ্ধান্ত করা): We have not yet decided whether we are going to picnic.
Dwell upon (আলোচনা করা): They dwell long upon the matter.
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Idioms
All at once - (হঠাৎ): I feel terribly sleepy all at once.
Art and part (অভিসন্ধি ও সম্পাদন) We have no art and part in his affairs.
At random (indiscriminately—এলোপাথাড়ি-adv.) He talks at random like a mad man.
Soft Soap (নিজ অভিপ্রায়ে/অভিসন্ধিতে তোষামোদ করা): He was expert in soft soap.
To go to the dogs (গোল্লায় যাওয়া)- He has gone to the dogs by keeping evil company.