1. Lacking pathways
   - roadless, trackless, untracked, untrod, untrodden

See also: inaccessible, unaccessible

• sex-change operation
• sex-limited
• sex-linked
• sex-linked disorder
• sex-starved
• sexadecimal notation
• sexadecimal number system
• sexagenarian
• Sexagesima
• sexagesimal
• sexcapade
• sexed
• sexily
• sexiness
• sexism
• sexist
• sexless
• sexlessness
• sexologist
• sexology
• sexploitation
• sexpot
• sext
• sextant
• sextet