Linchpin : অপরিহার্য উপাদান; অপরিহার্য অংশ; আসল লোক বা জিনিস; গাড়ির চাকার খিল বা পিন;
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Appropriate Prepositions
Antipathy to/towards (ঘৃনা): I have a strong antipathy to smoking.
Argue with, about(কথা কাটাকাটি করা): They always argue with me about tiny matter.
Ask about (কাউকে খোঁজ করা): Rahim asked about Karim.
Averse to (বিমুখ): Rahim was averse of your various problems.
Rid of (মুক্তি দেওয়া): He will get rid of troubles soon.
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Idioms
At a discount (অনাদৃত) Female education is no longer at a discount now.
Brown study (দিবাস্বপ্ন): The girl is absorbed in a brown study.
Null and void (বাতিল): The deed has been null and void now.
Out of sorts (সামান্য অসুস্থ): The baby is out of sorts after playing.
Yellow dog (হীন ব্যক্তি) - A yellow dog is always hated by all.