Underpin : জোরালো করা; সত্যতা প্রতিপন্ন করা; সমর্থন করা; দেওয়াল ইত্যাদিতে ঠেকনো লাগানো;
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Appropriate Prepositions
Attest to(প্রত্যয়ন করা): I like to attest to your ability.
Bad at (অদক্ষ): He is not bad at English.
Beg for(অনুরোধ করা): Maria begged the Superintendent for a seat in the school hostel.
Desist from (বিরত থাকা): She desisted from making this.
Dressed in (সজ্জিত, পরিহিত): The girl was dressed in silk.
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Idioms
At a standstill (নিশ্চল, অচলাবস্থায়-adj.) The discussion is now at a standstill.
Carry the day (জয়লাভ করা) The boys carried the day in the debate competition.
Hue and cry (শোরগোল): The villagers raised a hue and cry to see the thief.
Irony of fate (ভাগ্যের পরিহাস): He could not succeed by irony of fate.
Pick one’s pocket (পকেট মারা)— He tried to pick my pocket.