Complacency : প্রসন্নতা; সুখ; প্রসাদ; আত্মপ্রসাদ; চিত্তপ্র্রসাদ;
Related Words
complacence  complacency  complaisance  complexions  See Words Also In
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Appropriate Prepositions
Abide in(বাস করা): I abide in Dhaka with my family.
Concentrate on(কেন্দ্রীভূত করা): Try to concentrate your attention on your studies.
Conform to (নিয়মনীতি অনুসরণ করা): The employees have to conform to a strict dress code.
Delighted at/with (আনন্দিত হওয়া): Sharmin was delighted at/with her husband’s promotion.
Relevant to (প্রাসঙ্গিক): Your answer is not exactly relevant to my question.
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Idioms
At home (proficient in — দক্ষ) The students of Bangladesh should be at home in Bangla.
At the latest (খুব বেশি দেরী হলে) He will arrive here at 5 p. m. at the latest.
Call in question (সন্দেহ করা): No one can call his honesty in question.
Now and then (মাঝে মাঝে): He comes here now and then.
Through and through (পুঙ্খানুপুঙ্খু রুপে)- He read the poem through and through.