Portentous : অশুভসূচক;
Related Words
portends  portent tous  portentous  portents  portmanteaus  pretends  pretentious  See Words Also In
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Appropriate Prepositions
Affectionate to(স্নেহশীল): He is very affectionate to his baby.
Appoint to(নিযুক্ত করা/হওয়া): Kibria has been appointed to the post of Headmaster.
Convinced of (আশ্বস্ত): You are convinced of his product.
Defend against (রক্ষা করা): We will defend our country against all enemies.
Free from (মুক্ত): He is now free from danger.
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Idioms
At home (proficient in — দক্ষ) The students of Bangladesh should be at home in Bangla.
Look into something (তদন্ত করা- investigate) - The manager looked into the matter.
Nip in the bud (অঙ্কুরে বিনষ্ট হওয়া): All his hopes were nipped in the bud.
On the whole (মোটের ওপর): On the whole, his conduct is good.
Pros and cons (খুঁটিনাটি): You should consider the pros and cons of the system.