Psychopath : মানসিক অস্থিরতারূপ ব্যাধিগ্রস্থ ব্যক্তি;
Related Words
phosphate  psychopath  psychopathic  psychopathology  psychopathy  See Words Also In
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Appropriate Prepositions
Behave towards(ব্যবহার করা): The students behaved objectionably towards the Head teacher.
Defend against (রক্ষা করা): We will defend our country against all enemies.
Devote to (উৎসর্গ করা/নিয়োজিত করা): Students should devote sufficient time to their studies.
Grasp at (আঁকড়িয়ে ধরা): He grasped me at my hand.
Shout at (চিৎকার করে ডাকা): Do not shout at your parents.
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Idioms
At the latest (খুব বেশি দেরী হলে) He will arrive here at 5 p. m. at the latest.
In vogue (চালু): This custom is not in vogue at present.
Lose heart (হতাশ হওয়া) — Do not lose heart in danger.
Red tape (official formalities, অফিসের কাজ)— You would not believe the red tape involved in getting the required permits.
To the point (সঠিক) - The boy answered the question to the point.