Essential : অপরিহার্য ও অত্যাবশ্যকীয়
Related Words
essential  essential nature  essential oil  essential part  essential work  essentiality  essentially  essentialoil  essentials  essentialservice  See Words Also In
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Appropriate Prepositions
Contemporary of (সমসাময়িক): William Wordsworth was a contemporary for greater efficiency.
Defend against (রক্ষা করা): We will defend our country against all enemies.
Play on (বাজানো): They play on the piano.
Remedy for (প্রতিকার): There is no remedy for cancer.
Sanguine of (নিশ্চিত বা আশান্বিত): Be sanguine of your success.
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Idioms
At last (in the end – অবশেষে) He tried hard, and at last, succeeded in achieving his goal.
At home (comfortable— আরাম) He feels at home in Dhaka now.
Fall flat (ফলপ্রসূ না হওয়া): This business is going to fall flat.
Out of order (বিকল): The elevator was out of order.
Under age (অপ্রাপ্ত বয়স্ক)- He could not cast his vote because he was under age.