Slow coach ( অলস প্রকৃতির লোক ) You cannot expect much from a slow coach like him.
At a loss( হতবু্দ্ধি ; কিংকর্তব্যবিমূঢ় ) He was at a loss and did not know what to do.
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.
All at once( হঠাৎ ) All at once a tiger came out of the forest.
Kith and kin( নিকট আত্মীয় ) He has no good relationship with his kith and kin.
Burning question ( তীব্র বিতর্কের বিষয় ) The problem of the dowry system is the burning question of the day.