Insubstantial : অবাস্তব; অসার; অলীক; অস্থূল;
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Appropriate Prepositions
Answerable to (কারো কাছে জবাবদিহিতা করা): He is not answerable to anybody for his mistake.
Die for (আত্নত্যাগ করা): Our Chairman died for our country.
Penalty for, with (দণ্ড, জরিমানা): She has paid the penalty for the misuse of power with two years in prison.
Rely on (নির্ভর করা): We should not rely on a lazy man.
Yield to (নতি স্বীকার করা): I shall not yield to his temptation.
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Idioms
Bring to book (reproach-Start- ভর্ৎসনা করা) The father brought his son to book for his failure in the exam.
Bad names (গালমন্দ—n) He called the man bad names.
Irony of fate (ভাগ্যের পরিহাস): He could not succeed by irony of fate.
Salt of the earth (গুরুত্বপূর্ণ ব্যক্তিবর্গ) —The salt of the earth is remembered always.
Upper hand (প্রাধান্য) - He got the upper hand in the selection.