Unobserved : অলক্ষিত; অতর্কিত; অগোচর;
Related Words
unabsorbed  unobserved  unobservedly  See Words Also In
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Appropriate Prepositions
Adjacent to (সন্নিহিত): His house was adjacent to the bridge.
Agree with, on, to(একমত হওয়া): My father agreed with me on this point, but he did not agree to my proposal to set up a canteen.
Attacked by(আক্রান্ত ব্যক্তিবাচক): He has been attacked by a gang of robbers.
Hard of (কানে খাটো বা কম শোনা): Ratan is a hard of hearing.
Match for (প্রতিদ্বন্দ্বী): He is no match for me.
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Idioms
At all (in the least degree – মোটেও না) There is no water at all in the pond.
Bring to book (reproach-Start- ভর্ৎসনা করা) The father brought his son to book for his failure in the exam.
Set free (মুক্ত করা): The prisoners were set free.
Salt of the earth (গুরুত্বপূর্ণ ব্যক্তিবর্গ) —The salt of the earth is remembered always.
Well-to-do (সঙ্গতিপূর্ণ) - He was not born in a well-to-do family.