Source : Webster's Revised Unabridged Dictionary (1913)

Compulsorily \Com*pul"so*ri*ly\, adv.
   In a compulsory manner; by force or constraint.

Source : WordNet®

compulsorily
     adv : 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." [syn: {obligatorily}, {mandatorily}]