The best English translation of this Bangla Sentence `শব্দের বানান, অর্থ ও উচ্চারণের জন্য অভিধান এক দ্রুত ও সুনিশ্চিত প্রামাণ্য বিশেষজ্ঞ।`  is

. Dictionary is a hasty and sure expert on spelling,. Dictionary is a hasty and sure expert on spelling. Dictionary is a hasty and sure expert on spelling meaning, and pronunciation of words

Dictionary is a hurried and sure specialist on spelling, meaning, and pronunciation of words

. Dictionary is an immediate and sure perfect on spelling, meaning and pronunciation of words.

Dictionary is a quick and sure authority on spelling, meaning, and pronunciation of words.