Fish out of water ( অস্বস্তিকর অবস্থায় ) When he came to the village, he felt like a fish out of water.
A bolt from the blue ( সম্পূর্ন অপ্রত্যাশিত ) The news of his father's death came to him as a bolt from the blue.
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.
Big gun ( নেতৃস্থানীয় ব্যক্তি ) He is a big gun of our locality.
At a stretch ( একটানা ) He can run ten miles at a stretch.