At one’s own sweet will ( খুশি মতো ) He still does it at his own sweet will.
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.
In no time ( শীঘ্র ) He will finish the work in no time.
At dagger drawn ( খড়গহস্ত ) The two brothers are now at daggers drawn.
At all ( আদৌ ) He does not know French at all.
On the spur of the moment ( মুহুর্তের উত্তেজনায় ) He did it on the spur of the moment.