Rigors : কাঠিন্য; কষাকষি; যথাযথতা; নিশ্চলতা; তীব্রতা; ক্ষমাহীনতা; কঠিনতা; কঠোরতা;
Related Words
razors  regorge  regorges  regress  rigorism  rigorous  rigorously  rigors  rigours  rockers  See Words Also In
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Appropriate Prepositions
Absorbed in(মগ্ন): I am absorbed in my study.
Delighted at/with (আনন্দিত হওয়া): Sharmin was delighted at/with her husband’s promotion.
Dwell upon (আলোচনা করা): They dwell long upon the matter.
Point out (চিহ্নিত করা): Point out the mistakes from the book.
Rule over (শাসন করা): In the absence of the Parliament, the President rules over the country.
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Idioms
All in - (পরিশ্রান্ত): I was all in after the meeting.
Breathe one’s last (decease, die- শেষ নিঃশেষ ত্যাগ করা, মরে যাওয়া) The man breathed his last in his native village.
Hard nut to crack (কঠিন সমস্যা): The problem of adult education is really hard nut to crack.
Lame excuse (বাজে ওজর): The lame excuse will not do.
On the whole (মোটের ওপর): On the whole, his conduct is good.