undocumented /ˌʌnˈdɑːkjəˌmɛntəd/ adjective /ˌʌnˈdɑːkjəˌmɛntəd/
adjective
Learner's definition of UNDOCUMENTED
1
: not having the official documents that are needed to enter, live in, or work in a country legally无有效证件的;无合法身份证明的 2
: not supported by evidence that consists of documents : not having written proof无书面证明的;无证明文件的