Roundoff : সুসম্পন্ন করা; পূর্ণসংখ্যায় গুণিতকে পরিণত করে নেওয়া;
Related Words
round about  round off  round up  round-up  roundabout  rounded off  roundoff  roundup  See Words Also In
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Appropriate Prepositions
Apathy towards (অনাগ্রহ): The student has great apathy towards his studies.
Comply with(মেনে নেওয়া): The clerks must comply with the orders of their officer.
Delighted at/with (আনন্দিত হওয়া): Sharmin was delighted at/with her husband’s promotion.
Devoted to (মনোযোগী): He is devoted to music.
Inferior to (নীচু/হীন): He is inferior to his neighbor.
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Idioms
Call to mind (স্মরণ করা): I cannot call to mind your cell number.
Man of letters (পন্ডিত ব্যক্তি): You are truly a man of letters.
Make head or tail – (মাথামুন্ডু বুঝা) – I cannot make head or tail of what you say.
Take one to task (rebuke, তিরস্কার করা)— He took me to task for negligence of duty.
Widow’s mite (দরিদ্রের ক্ষুদ্র দান): A windows mite is no less important than a large contribution of a rich man.