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
Apologize to (ক্ষমা প্রার্থনা করা, দুঃখসহ ত্রুটি স্বীকার করা): The student apologized to the Principal for adopting unfair means in the examination.
Behave towards(ব্যবহার করা): The students behaved objectionably towards the Head teacher.
Concentrate on(কেন্দ্রীভূত করা): Try to concentrate your attention on your studies.
Fit for (যোগ্য): Sabina is not yet fit for marriage.
Hatred for (ঘৃণা): I have no hatred for anyone.
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Idioms
Acid test (অগ্নি পরীক্ষা): You must succeed in the acid test of the time you live in.45
Hard nut to crack (কঠিন সমস্যা): The problem of adult education is really hard nut to crack.
Pack up a quarrel (ঝগড়া মিটানো)— He packed up their quarrel.
To the utmost (যথাসাধ্য) - I tried to the utmost of my ability to have a job.
With a view to (উদ্দেশ্য)- He goes to college with a view to attending the class.