Unknown : অজ্ঞাত;
Related Words
unison  unkind  unknit  unknowable  unknowing  unknowingly  unknown  unknown person  See Words Also In
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Appropriate Prepositions
Apologize to (ক্ষমা প্রার্থনা করা, দুঃখসহ ত্রুটি স্বীকার করা): The student apologized to the Principal for adopting unfair means in the examination.
Appetite for(ক্ষুধা): He has no appetite for food.
Drop to (নিচে নামানো): Asif dropped his voice to a whisper.
Dull at (অপ্টু/কাঁচা): He is dull at mathematics.
Stick to (দৃঢ়ভাবে লেগে থাকা): We should always stick to our decisions.
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Idioms
Bear (a) grudge (bear hostility to— শত্রুতা বা বিদ্বেষ পোষন করা—V) We should not bear (a) grudge against our brethren.
Short cut (সংক্ষিপ্ত পথ)— He comes by this shortcut.
Three R's (প্রাথমিক শিক্ষা)— He has not yet learnt the three R's.
Up and doing (উদ্যোগী): Be up and doing and then you will succeed in your life.
Widow’s mite (দরিদ্রের ক্ষুদ্র দান): A windows mite is no less important than a large contribution of a rich man.