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
Burst out a laughter(হাসিতে ফেটে পড়া) He bursts out a laughter.
Count on/upon (নির্ভর, বিশ্বাস করা): Rahim count on (upon) my help.
Drop to (নিচে নামানো): Asif dropped his voice to a whisper.
Repent of (অনুতাপ করা): I repented of my past.
Urge upon (আহবান জানানো): She urged upon his son the importance of being honest.
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Idioms
A bed of roses - (সুখকর অবস্থা): Life is not a bed of roses.
Arm in arm (পরস্পর সম্পর্কিত বিষয়) All good people should live arm in arm with one another.
In no time (শীঘ্র): He will finish the work in no time.
Silver tongue (মিষ্টভাষী)- He is a man of silver tongue.
Swan-song (অন্তিম গীত, শেষ কর্ম): This writing is the swan song of Kazi Nazrul islam.