Dull : বোকা লোক;
Related Words
dalle  dally  dell  dill  doll  dolly  dual  duel  dull  duly  dwell  See Words Also In
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Appropriate Prepositions
Adequate for(পর্যাপ্ত): The loan given by the bank is not adequate for the farming project.
Averse to (বিমুখ): Rahim was averse of your various problems.
Devoid of (বিহীন/বর্জিত): He is devoid of common sense.
Eager for, about (একাগ্র): The students for this school are eager for knowledge. The teacher is eager about the success of his students.
Rejoice at/in (আনন্দ করা): Everybody rejoiced at/in his success.
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Idioms
At ease (in peace or pleasure – শান্তিতে বা আরামে) A man who has enemies can not live at ease.
Dead of night (মধ্যরাত্রি): The robbers broke into the house at dead of night.
Flesh and blood (রক্তমাংসের শরীর): She's my own flesh and blood; I can't believe she treated me that way!
Ins and out (খুঁটিনাটি): I know ins and outs of this file.
Upper hand (প্রাধান্য) - He got the upper hand in the selection.