Retroact : প্রতিক্রিয়া ঘটা; পিছন দিকে ক্রিয়াশীল হওয়া;
Related Words
re tract  redirect  retraced  retract  retractable  retracted  retractile  retracting  retraction  retractions  retractive  retractor  retracts  retroact  retroaction  retrorocket  See Words Also In
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Appropriate Prepositions
Angry with(কারো সাথে ক্রুদ্ধ হওয়া): The teacher was very angry with the students.
Break in (কথার মাঝে কথা বলা): As she was talking, he suddenly broke in, saying, ‘that’s a rat!’
Business with (ব্যবসা, কাজ): He is pleased to do business with you.
Detrimental to (অপকারী): Smoking is detrimental to health.
Rebel against (বিদ্রোহ করা): The soldiers rebelled against the king.
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Idioms
Bring to light (disclose-প্রকাশ করা) The police brought the secret to light.
Die in harness (কর্মরত অবস্থায় মারা যাওয়া): Dr. Sen died in harness.
In the long run (পরিণামে): You will have to suffer in the long run.
Lump sum (এক কালীন) — He gave us lump sum money.
Pick one’s pocket (পকেট মারা)— He tried to pick my pocket.