Culturally forbidden.
Excluded or forbidden from use, approach or mention.
An inhibition or ban that results from social custom or emotional aversion.
Something which may not be used, approached or mentioned because it is sacred.
To ban.
To avoid.
To mark as taboo.
Not having official documentation required to legally enter, reside in, or work in a country.
Lacking instructions or reference material.
Not having official documents that provide identification, authorization, etc.
Synonym of undocumented immigrant