| 单词 | signed up | 
| 释义 | sign upverb  signed up; signing up; signs up   intransitive verb   : to sign one's name (as to a contract) in order to obtain, do, or join something  sign up for insurance sign up for classes  sign-up   ˈsī-ˌnəp noun or adjective signed up verb1 as in signed on Synonyms & Similar Words Relevance 
 2 as in called up Synonyms & Similar Words 
 Antonyms & Near Antonyms 
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