Head and ears( সম্পূর্ণরূপে ) He is over head and ears in debt.
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.
Read between the lines( তাৎপর্য বোঝা ) Try to read between the lines of the letter.
A black sheep( কুলাঙ্গার ) Tom is a black sheep in their family
To and fro( এদিন-ওদিক ) Being unable to make up his mind the man is walking to and fro.
To the backbone( হাড়ে হাড়ে ) The boy is wicked to the backbone.