Unbolt : খিল খোলা, খোলা, বন্ধনমুক্ত করা;
Related Words
un fold  unboiled  unbolt  unbolted  unfelt  unfold  unfolds  unpolluted  See Words Also In
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Appropriate Prepositions
Adept in (দক্ষ): He is adept in playing football.
Breakdown of (বিস্তারিত): Here is statistical breakdown of data.
Consistent with(সামঞ্জস্যপূর্ণ): Your action is not consistent with your word.
Creep up (বৃদ্ধি পাওয়া): The prices of are creeping up day by day.
Taste for (রুচি; পছন্দ): He has a great taste for music.
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Idioms
All at once - (হঠাৎ): I feel terribly sleepy all at once.
At least (in the lowest estimate- কমপক্ষে) He is the owner of thirty lakh taka at least.
Pandora’s box (আপাতঃ দৃষ্টিতে ভালো মনে হলেও আসলে ভালো নয়)—His words proved to be Pandora’s box.
Sheet anchor (শেষ আশ্রয়; প্রধান অবলম্বন; আসল খুঁটি)— This small piece of land is his sheet anchor.
To the contrary (against what some one had said, পক্ষান্তরে) —He said nothing to the contrary.