Immutable : অপরিবর্তনীয়
Related Words
imitable  immutability  immutable  inimitable  See Words Also In
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Appropriate Prepositions
Appear at/in(উপস্থিত হওয়া): I should appear at/in the exam hall in time.
Call on(কারও সাথে দেখা করা): I called on him in his office.
Care of(যত্ন নেওয়া): You should take care of your health.
Count upon(নির্ভর করা): He always counts upon your help for this work.
Dedicate to (উৎসর্গ করা): His pfe is dedicated to the welfare of the country.
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Idioms
As a rule (নিয়ম অনুসারে.) As a rule, she kept silent in the meeting.
Fish in a troubled water (এলোমেলো অবস্থার সুযোগ নেয়া): He made a lot of money by fishing in a troubled water.
Ins and out (খুঁটিনাটি): I know ins and outs of this file.
Pros and cons (খুঁটিনাটি): You should consider the pros and cons of the system.
To the point (সঠিক) - The boy answered the question to the point.