All at once ( হঠাৎ ) All at once a tiger came out of the forest.
By hook or by crook ( যে কোন উপায়ে ) You must do this work by hook or by crook.
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.
By all means ( সবর্প্রকার ) Try to do it by all means.
Square meal ( পেট ভরা আহার ) He is too poor to have a square meal every day.