歓ぶ

(1)behave as expected during of holidays or rites; "Keep the commandments"; "celebrate Christmas"; "Observe Yom Kippur"

(2)休日または儀式で予想通りに振舞う

(3)have a celebration; "They were feting the patriarch of the family"; "After the exam, the students were celebrating"

(4)お祝いをする

(1)