oblig·a·to·ri·ly /əˌblɪgəˈtorəlɪ, ɑ, ˈtɔr , ˌɑblɪgə-/ 副詞
Ob·li·ga·to·ri·ly adv. In an obligatory manner; by reason of obligation.
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obligatorily
adv 1: in an obligatory manner; "this rule applies obligatorily"
[ant: optionally]
2: 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, mandatorily]