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
Apathy towards (অনাগ্রহ): The student has great apathy towards his studies.
Careful of(যত্নশীল থাকা): Sadia is careful of her health.
Depend on (নির্ভর করা): Presently, the students depend on/upon guide books.
Inferior to (নীচু/হীন): He is inferior to his neighbor.
Pity for (করুণা, সমব্যথা): I feel pity for this helpless old man.
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Idioms
All at once - (হঠাৎ): I feel terribly sleepy all at once.
Bad blood - (শত্রুতা): There has always been bad blood between these families.
Get rid of (মুক্তি পাওয়া): Try to get rid of the rogue.
Riding for a fall (বেপরোয়াভাবে কাজ করা- to act recklessly): He rides for a fall in the election.
Three R's (প্রাথমিক শিক্ষা)— He has not yet learnt the three R's.