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 large( স্বাধীন ) The anti-socials are still at large.
Part and parcel( অবিচ্ছেদ্য অংশ ) Discipline is part and parcel of administration.
At bay( কোনঠাসা ) The tiger was at bay in the bush.
Take one to task( তিরস্কার করা ) He was taken to task for negligence of duty.
Hard and fast( বাঁধা ধরা ) There is no such hard and fast rule in this matter.