By chance ( দৈবাৎ ) I met him on the way by chance.
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.
Cats and dogs ( মূষল ধারে ) It was raining cats and dogs.
Cut to the quick ( মর্মাহত হওয়া ) I was cut to the quick by his words.
Up and downs ( উন্থানপতন ) There are ups and downs in a man's life.