Unnoticeably : অলক্ষিতভাবে;
Related Words
unmatchable  unnoticeably  unteachable  untouchability  untouchable  See Words Also In
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Appropriate Prepositions
Bar to(বাধা): Poverty is not a bar to happiness.
Road to (উপায়/ রাস্তা): There is no easy road to learning.
Run into (জড়িয়ে পড়া): He had run into debt.
Take after (সদৃশ হওয়া, একই রকম হওয়া): The boy takes after his brother.
Work for (কারো জন্য কাজ করা): She works for a construction company.
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Idioms
At-fault (guilty-কিংকর্তব্যবিমূঢ়, অপরাধ, দোষ adj.) You are at fault.
Fair play (প্রতারণা বিহীন নীতি বা কাজ): I believe in the practice of fair play in my business.
Gala day (বিশেষ দিন): The Eid–Ul-Fitr is a gala day for Muslims.
Red letter day (স্মরণীয় দিন): The 16th December is a red letter day for us.
Ups and downs (উত্থান পতন)- There is ups and downs in a man's life.