Slow coach ( অলস প্রকৃতির লোক ) You cannot expect much from a slow coach like him.
All at once( হঠাৎ ) All at once a tiger came out of the forest.
Book worm( বইয়ের পোকা; গ্রন্থকীট ) Don't be a book worm.
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.
Through thick and thin( বাধা বিপত্তির মধ্য দিয়ে ) Reveka followed her husband through thick and thin.
At a low ebb( নিম্নমুখী ) His fame is at a low ebb now.