Verb (5-dan, ぶ, transitive)
1. to be delighted; to be glad; to be pleased; to rejoice
Verb (5-dan, ぶ, transitive)
2. to congratulate
3. to welcome (a proposal, advice, etc.); to take kindly to
Verb (5-dan, ぶ, intransitive)
4. to do with pleasure; to do gladly; to be happy (to do)
as よろこんで...