Meaning : In an essential manner.
Example :
Such expenses are necessarily incurred.
Synonyms : needfully
Meaning : In such a manner as could not be otherwise.
Example :
It is necessarily so.
We must needs by objective.
Synonyms : inevitably, needs, of necessity
Meaning : As a highly likely consequence.
Example :
We are necessarily bound for federalism in Europe.
Necessarily meaning in Bengali (Bangla).