On cost : উপরি খরচা;
Related Words
on cost  on set  onomastic  onset  See Words Also In
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Appropriate Prepositions
Capable of(সক্ষম): He is capable of doing it.
Competent for(যোগ্য): He is not competent for the post.
Comply with(মেনে নেওয়া): The clerks must comply with the orders of their officer.
Desire for (আকাঙ্ক্ষা করা): He has no desire for money.
Shocked at (মানসিক আঘাতপ্রাপ্ত): Snigdha was terribly shocked at the death of Ratul.
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Idioms
At all (in the least degree – মোটেও না) There is no water at all in the pond.
Do yeoman’s service (বিশেষ উপকার করা): Freedom fighters have done yeoman’s service for country.
Hold water (ধোপে টেকা): This policy will not hold water in this situation.
Make head or tail – (মাথামুন্ডু বুঝা) – I cannot make head or tail of what you say.
Pin money (স্ত্রীর দেয়া হাত খরচ)— She saved her pin money.