English

Definition of sign in phrasal verb from the Oxford Advanced Learner's Dictionary

 

sign in

 phrasal verb
phrasal verb
 
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Phrasal Verbs

sign in

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sign out

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sign in somebody

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sign out somebody

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sign somebody in

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sign somebody out

 
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to write your/somebody’s name when you arrive at or leave an office, a club, etc. All visitors must sign in on arrival. You must sign guests out when they leave the club.