To the backbone ( হাড়ে হাড়ে ) The boy is wicked to the backbone.
To and fro ( এদিন-ওদিক ) Being unable to make up his mind the man is walking to and fro.
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.
To the letter ( অক্ষরে অক্ষরে ) He followed my advice to the letter.
By all means ( সবর্প্রকার ) Try to do it by all means.
tickled pink ( খুব খুশি করানো ) She was tickled pink by the good news.