Red-letter : ক্যালেন্ডার বা পঞ্জিকায় লাল অক্ষরে চিহ্নিত;
Related Words
red-letter  red-letter day  redletter day  See Words Also In
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Appropriate Prepositions
Catch at(ধরা): A drowning man catches at a straw.
Change into (পরিবর্তিত হওয়া): At what point does boiling water change into vapor.
Depend upon (নিশ্চিত থাকা, আস্থা রাখা): Sumi depended upon his word.
Meet with (হঠাৎ কোন কিছু হওয়া): Yesterday I met with an accident.
Sentence to, for (দন্ডাদেশ দেওয়া): He was sentenced to death for murder.
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Idioms
At random (indiscriminately—এলোপাথাড়ি-adv.) He talks at random like a mad man.
Breathe one’s last (decease, die- শেষ নিঃশেষ ত্যাগ করা, মরে যাওয়া) The man breathed his last in his native village.
Backstairs influence (secret and illegal influence- গোপন এবং বে আইনী প্রভাব-n) He did not deseve the job, however, he got it by backstairs influence.
Ins and out (খুঁটিনাটি): I know ins and outs of this file.
Pros and cons (খুঁটিনাটি): You should consider the pros and cons of the system.