Catch red handed ( হাতে নাতে ধরা ) The thief was caught red handed.
Irony of fate ( ভাগ্যের পরিহাস ) He could not succeed by irony of fate.
Out of the wood ( বিপদমুক্ত ) He is not yet out of the wood.
A rainy day ( দুর্দিন ) Everybody should save something for rainy day.
Tooth and nail ( তীব্রভাবে ) He fought tooth and nail against his enemy.
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.