Speechless : নির্বাক; বাকশক্তিহীন;
Related Words
spaceless  specialises  specialists  specializes  speck less  speckles  speckless  speech less  speechless  speechlessness  See Words Also In
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Appropriate Prepositions
Aware of(অবগত): I am not aware of his dishonesty.
Congenial to(উপযোগী): The atmosphere is congenial to your health.
Refrain from (বিরত রাখা বা থাকা): I refrained him from smoking.
Sick of (ক্লান্ত): He is sick of this idle life.
Subsist on (বেঁচে থাকা): The poor subsist mainly on rice and pulses.
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Idioms
Dead of night (মধ্যরাত্রি): The robbers broke into the house at dead of night.
In full swing (পুরোদমে): The school is in full swing after the vacation.
In no time (শীঘ্র): He will finish the work in no time.
Rank and file (সাধারণ লোক): We should pay attention to the rank and file of the country.
Show good manner (ভালো আচরণ প্রদর্শন ): You should show good manner in the company of young ladies.