Meaning of しつれいします in Japanese

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Definition of しつれいします

しつれいします(shitsureishimasu) 【失礼します】

おさきにしつれいします(osakinishitsureishimasu) 【お先に失礼します】

(exp) pardon me for leaving (first) (used when leaving a workplace while others remain)
「おさきにしつれいします」「おつかれさまでした」
"I'm finished for the day." "Much appreciated."

"I'm finished for the day." "Much appreciated."