Lion's share ( সিংহভাগ ) He took the lion's share of the profit.
Irony of fate ( ভাগ্যের পরিহাস ) He could not succeed by irony of fate.
At all ( আদৌ ) He does not know French at all.
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 a stretch ( একটানা ) He can run ten miles at a stretch.
Call to mind ( স্মরণ করা ) I cannot call to mind your name.