This is the 5520th most frequent Japanese word.
お先に
"お先に" means "ahead" or "before (someone else)," often used politely to excuse oneself.
お先に is used here to politely indicate that the speaker is leaving before others.
お先に失礼します。
Excuse me, I'll be leaving first.
お先に is used here to politely invite someone else to proceed before the speaker.
どうぞお先にお入りください。
Please, go ahead and enter first.
お先に is employed here to seek permission to begin before others.