godan verb (-mu), intransitive verb
be in high spirits; be elated; be overjoyed
Describes a state of joyful excitement, often with a sense of eagerness or readiness to act. The verb is intransitive and typically used in literary or slightly formal contexts.
彼は合格の知らせに喜び勇んで家に帰った。
He went home elated at the news of passing the exam.
子供たちは遠足の朝、喜び勇んでバスに乗り込んだ。
The children boarded the bus in high spirits on the morning of the field trip.