Unauthorized : অননুমত, উপযুক্ত ক্ষমতাপ্রাপ্ত নয় এমন, অনধিকারী;
Related Words
unauthorised  unauthorized  undersized  See Words Also In
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Appropriate Prepositions
Attend to(মনোযোগ দেওয়া): Please attend to my advice.
Compete with(প্রতিযোগিতা করা): He does not pke to compete with
Conscious of(সচেতন): I am conscious of my deficiencies.
Convinced of (আশ্বস্ত): You are convinced of his product.
Relation with (সম্পর্ক): I have no relation with the culprit.
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Idioms
At a snail's pace (very slowly – খুব ধীর গতিতে) The economy of Bangladesh is growing at a snail’s pace.
As a rule (নিয়ম অনুসারে.) As a rule, she kept silent in the meeting.
Bare word (শুধু মুখের কথা, স্বাক্ষী প্রমানহীন কথা-n) He believed your bare word and now he has been played false with.
Lame excuse (বাজে ওজর): The lame excuse will not do.
Out of temper (ক্রুদ্ধ): The teacher is out temper to see the overall results.