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
Adhere to (লেগে থাকা, অটল থাকা): You should adhere to your principal.
Annoyed at(ব্যক্তি ছাড়া অন্যকিছুর প্রতি বিরক্ত): They were annoyed at his rough behavior.
Attend on/upon (সেবা করা): We should attend on/upon the ailing patient.
Cope with (এঁটে ওঠা; তাল মিলিয়ে চলা): They cannot cope with so much work.
Long for (আশা করা/কামনা করা): He longed for name and fame.
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Idioms
At liberty (free-মুক্ত-adj.) They are at liberty to go anywhere.
Bad bargain (purchasing at a high price-বেশি দামে কেনা-n) You had a bad bargain of the watch I see.
Dead language (যে ভাষা এখন আর কথ্য নয়): Sanskrit is a rich language, but it is now a dead language.
Run into debt (ঋণগ্রস্ত হওয়া)— He ran into debt.
Yellow dog (হীন ব্যক্তি) - A yellow dog is always hated by all.