Gemmologist : মনিরত্নবিদ;
Related Words
gemmologist  genealogist  See Words Also In
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Appropriate Prepositions
Attend on/upon (সেবা করা): We should attend on/upon the ailing patient.
Aware of(অবগত): I am not aware of his dishonesty.
Caution against(সাবধান): Take all cautions against the danger.
Convinced of (আশ্বস্ত): You are convinced of his product.
Fantasize about (কল্পনা করা): They fantasized about winning the lottery.
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Idioms
Arm in arm (পরস্পর সম্পর্কিত বিষয়) All good people should live arm in arm with one another.
At one’s elbow (near at hand — হাতের কাছে – adv.) His private secretary is always at his elbow.
Lame excuse (বাজে ওজর): The lame excuse will not do.
Of course (অবশ্যই): Of course, you know what that meant.
Round the clock (সমস্ত দিন): He is working round the clock.