On time : একদা; একবার;
Related Words
on time  one time  one-time  onetime  ontime  See Words Also In
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Appropriate Prepositions
Annoyed for(কোনো কারনে বিরক্ত হওয়া): The officer was annoyed with the clerk for being late.
Assure of(আশ্বাস দেওয়া): I can assure you of the Principal’s honesty.
Burst out a laughter(হাসিতে ফেটে পড়া) He bursts out a laughter.
Infested with (অতিষ্ঠ): The room is infested with rats.
Repent of (অনুতাপ করা): I repented of my past.
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Idioms
ABC - (প্রাথমিক জ্ঞান): I don't know the ABC of politics.
In lieu of (পরিবর্তে): Give me this pen in lieu of that.
In vogue (চালু): This custom is not in vogue at present.
In one’s teens (তের থেকে উনিশ বছর বয়সের মাঝে): She is yet in her teens.
Man of letters (পন্ডিত ব্যক্তি): You are truly a man of letters.