Unassailably : প্রশ্নাতীত; সন্দেহাতীত;
Related Words
unassailable  unassailably  unsalable  unsaleable  unscalable  unsolvable  See Words Also In
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Appropriate Prepositions
Absent from(অনুপস্থিত থাকা): I was absent from the class yesterday.
Argue with, about(কথা কাটাকাটি করা): They always argue with me about tiny matter.
Hit upon (পরিকল্পনা নেয়া): Rahim hit upon a new plan.
Hunger for (আকাঙ্কা): The teacher has a great hunger for knowledge.
Remedy for (প্রতিকার): There is no remedy for cancer.
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Idioms
At ease (in peace or pleasure – শান্তিতে বা আরামে) A man who has enemies can not live at ease.
Easy and free (অমায়িক): The boy is easy and free, so he has many friends.
Get rid of (মুক্তি পাওয়া): Try to get rid of the rogue.
Lame excuse (বাজে ওজর): The lame excuse will not do.
To and fro (hither and thither, এদিক ওদিক)-The man is walking to and fro.