At large ( স্বাধীন ) The anti-socials are still at large.
Hard and fast ( বাঁধা ধরা ) There is no such hard and fast rule in this matter.
A blessing in disguise ( বিপরীতে হিত ; প্রথমে খারাপ হিসেবে মনে হলেও পরবর্তীতে ভালো হয় ) Sam's motorcycle accident was a blessing in disguise because he got enough insurance money.
At the eleventh hour ( শেষ মুহূর্তে ) The doctor came to the patient at the eleventh hour.
At one’s wit’s end ( হতবুদ্ধি ) He was at his wit’s end and did not know what to do.
Maiden speech ( প্রথম বক্তৃতা ) His maiden speech fell flat on the audience.
