Perpetual : চিরস্থায়ী, অবিরাম, প্রায়শঃ;
Related Words
perpetual  preputial  See Words Also In
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Appropriate Prepositions
Cast aside (ছুঁড়ে ফেলা): As soon as they become rich they cast aside their poor friends.
Compete with(প্রতিযোগিতা করা): He does not pke to compete with
Informed of (অবহিত): I was not informed of your misfortune.
Play at (খেলা): I do not play at cards.
Quarrel with (ঝগড়া করা): Some girls quarreled with one another.
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Idioms
After all - (সব কথার পরেও): I rang and told her I couldn't come after all.
At death’s door (at the point of death- মৃত্যুর দ্বারে) The patient is now at death’s door.
Back and forth (এদিক ওদিক) The mad man was running back and forth in the hospital.
Read between the lines (understand the significance, অন্তনিহিত অর্থ বুঝা) Try to read between the lines of the letter.
To the letter (in all details, অক্ষরে অক্ষরে) —Follow my advice to the letter.