Unassailably : প্রশ্নাতীত; সন্দেহাতীত;
Related Words
unassailable  unassailably  unsalable  unsaleable  unscalable  unsolvable  See Words Also In
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Appropriate Prepositions
Attest to(প্রত্যয়ন করা): I like to attest to your ability.
Composed of(তৈরী): This medicine is composed of vitamins and minerals.
Play on (বাজানো): They play on the piano.
Rejoice at/in (আনন্দ করা): Everybody rejoiced at/in his success.
Subsist on (বেঁচে থাকা): The poor subsist mainly on rice and pulses.
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Idioms
After all - (সব কথার পরেও): I rang and told her I couldn't come after all.
Brown study (day dream-দিবাস্বপ্ন -n) The woman is absorbed in a brown study.
Dead of night (মধ্যরাত্রি): The robbers broke into the house at dead of night.
End in smoke (ব্যর্থ হওয়া): All his plans ended in smoke.
Easy and free (অমায়িক): The boy is easy and free, so he has many friends.