Inefficacious : নিষ্ফল; ফল উৎপাদনে অক্ষম
Related Words
ineffcacious  inefficacious  inefficacy  inefficiencies  inefficiency  inefficient  infections  infectious  inofficial  See Words Also In
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Appropriate Prepositions
Absorbed in(মগ্ন): I am absorbed in my study.
Argue over (কোন বিষয়ে তর্ক করা): The kids are arguing over which TV program to watch.
Consent to(মত দেওয়া): My father did not consent to the proposal of my sister’s marriage.
Feed on (খেয়ে বাঁচা): The cow feeds on grass.
Rebel against (বিদ্রোহ করা): The soldiers rebelled against the king.
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Idioms
Brown study (day dream-দিবাস্বপ্ন -n) The woman is absorbed in a brown study.
Bad bargain (purchasing at a high price-বেশি দামে কেনা-n) You had a bad bargain of the watch I see.
Crocodile tears (মায়াকান্না): He shed crocodile tears at our misery.
Cock and bull story (আষাঢ়ে গল্প): You must be ashamed of your cock and bull story.
Run a risk (ঝুকি নেয়া) — He ran a risk to save his life.