Unauthorized : অননুমত, উপযুক্ত ক্ষমতাপ্রাপ্ত নয় এমন, অনধিকারী;
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unauthorised  unauthorized  undersized  See Words Also In
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Appropriate Prepositions
Add to (বৃদ্ধি করা, যোগ করা): The doll-dance in the exhibition added to our pleasure.
Cruise to (জয় লাভ করা): The Bangladesh team cruised to their fifth successive win this afternoon.
Dwell in (বাস করা): He dwells in a tall apartment.
Repent on (নির্ভরশীল): He is repent on his parents.
Shocked at (মানসিক আঘাতপ্রাপ্ত): Snigdha was terribly shocked at the death of Ratul.
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Idioms
Birds of a feather (persons of like disposition-একই পর্যায়ের লোক) Bird’s of a feather flock together.
Slip of the tongue (বলায় সামান্য ভুল): This is a slip of the tongue; don’t pay much stress on it.
Show good manner (ভালো আচরণ প্রদর্শন ): You should show good manner in the company of young ladies.
Take one to task (rebuke, তিরস্কার করা)— He took me to task for negligence of duty.
To the backbone (to the core, হাড়ে হাড়ে) —The boy is wicked to the backbone.