mandatorily mandatorily /mændəˈtɔːrɪli/

adverb

1. In a manner that cannot be evaded  ( compulsorily , mandatorily , obligatorily )
   in a manner that cannot be evaded
    The ministry considers that contributions to such a fund should be met from voluntary donations rather than from rates compulsorily levied.
   the ministry considers that contributions to such a fund should be met from voluntary donations rather than from rates compulsorily levied.