At sixes and sevens( বিশৃঙ্খলা অবস্থায় ) All the furniture in the room were at sixes and sevens.
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.
Dead of night( মধ্য রাত্রি ) The robbers broke into the house at dead of night.
Cats and dogs( মূষল ধারে ) It was raining cats and dogs.
At arm’s length( দূরে ) Try to keep the bad boy at arm’s length.
Slow coach ( অলস প্রকৃতির লোক ) You cannot expect much from a slow coach like him.