val·e·dic·to·ry
adjective/ˌvælɪˈdɪktəri/
/ˌvælɪˈdɪktəri/
[usually before noun] (formal)- connected with saying goodbye, especially at a formal occasion
（尤在正式场合）告别的，告辞的 - a valedictory speech
告别演说 - The outgoing secretary general will deliver his valedictory address on Friday.
即将卸任的秘书长将于周五发表告别演说。
- a valedictory speech