Concave : অবতল। অবতলতা;
Related Words
communicable  con cave  concave  concavity  concavo-convex  conceive  conceived  conceives  concept  concepts  concessive  concubinage  concubine  See Words Also In
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Appropriate Prepositions
Argue against (বিপক্ষে বলা): She argued against the bill.
Defend against (রক্ষা করা): We will defend our country against all enemies.
Effect of (প্রভাব): The effect of corruption is very harmful for our society.
Fatigued by (ক্লান্ত): He was fatigued by hard work.
Object to (আপত্তি করা): He objected to my proposal.
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Idioms
At a snail's pace (very slowly – খুব ধীর গতিতে) The economy of Bangladesh is growing at a snail’s pace.
Seventh heaven – (মহাখুশী) – I was in the seventh heaven when I heard the news of my BCS final result.
Slip of the tongue (বলায় সামান্য ভুল): This is a slip of the tongue; don’t pay much stress on it.
Up-to-date (আধুনিক) - Now-a-days ladies are very up to date.
Worthy of (যোগ্য) - He is worthy of a good job.