By chance : কপালজোড়ে; দৈবাৎ; দৈবক্রমে; ঘটনাক্রমে; অদৃষ্টক্রমে; হঠাৎ;
Related Words
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Appropriate Prepositions
Adjacent to(সংলগ্ন): The Post Office is adjacent to my house.
Admit into(প্রবেশ করতে দেওয়া): Only the selected people were admitted into the theater.
At lunch (দুপুরের খাবারে): They were talking so much at lunch that their food went cold.
Deal in (কোনো কিছুর ব্যবসা করা): They deal in green vegetables.
Free from (মুক্ত): He is now free from danger.
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Idioms
At times (মাঝে মাঝে): He at times comes here.
Back and forth (এদিক ওদিক) The mad man was running back and forth in the hospital.
End in smoke (ব্যর্থ হওয়া): All his plans ended in smoke.
Maiden speech (প্রথম বক্তৃতা): His maiden speech fell flat on the audience.
To the utmost (যথাসাধ্য) - I tried to the utmost of my ability to have a job.