副词

1. 不可避免地;必然(发生)地
    If something will inevitably happen, it is certain to happen and cannot be prevented or avoided.

1. in such a manner as could not be otherwise

    e.g. it is necessarily so
           we must needs by objective

    Synonym: necessarilyof necessityneeds

2. by necessity

    e.g. the situation slid inescapably toward disaster

    Synonym: inescapablyineluctablyunavoidably