Wordnet 3.0
ADVERB (1)
1. 
 in a manner that cannot be evaded; 
- Example: "the ministry considers that contributions to such a fund should be met from voluntary donations rather than from rates compulsorily levied."[syn: compulsorily, obligatorily, mandatorily]
WordNet (r) 3.0 (2006):
mandatorily
    adv 1: 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: compulsorily,
           obligatorily, mandatorily]