To obscure : অস্পষ্ট করা; অন্ধকার করা; ক্ষীণ করা; ম্লান করা; গোপন করা;
Related Words
to absorb  to be sure  to obscure  to observe  top secret  topsecret  See Words Also In
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Appropriate Prepositions
Antipathy to/towards (ঘৃনা): I have a strong antipathy to smoking.
Congenial to(উপযোগী): The atmosphere is congenial to your health.
Inquire into (খতিয়ে দেখা): The police officer will inquire into the matter.
Side with (পক্ষ অবলম্বন করা): The Chairman sided with the powerful party.
Worry about (কোনো কিছু বা কাউকে নিয়ে উদ্বিগ্ন হওয়া): Please, don’t worry about me. I will be alright.
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Idioms
Bear in mind (মনে রাখা): Always bear in mind that you are a daughter of a reputed person.
Backstairs influence (secret and illegal influence- গোপন এবং বে আইনী প্রভাব-n) He did not deseve the job, however, he got it by backstairs influence.
Hue and cry (শোরগোল): The villagers raised a hue and cry to see the thief.
On the whole (মোটের ওপর): On the whole, his conduct is good.
Swan-song (অন্তিম গীত, শেষ কর্ম): This writing is the swan song of Kazi Nazrul islam.