unilineal
adjective
uni·lin·e·al ˌyü-ni-ˈli-nē-əl 
: tracing descent through either the maternal or paternal line only
Word History
First Known Use
1935, in the meaning defined above
- unattainabilities
- unattainability
- unattainable
- unattainablenesses
- unattainably
- unattained
- unattainted
- unattempted
- unattended
- unattentive
- unattenuated
- unattested
- unattired
- unattractive
- unattractively
- unattractiveness
- unattractivenesses
- unattributable
- unattributably
- unattributed
- unattuned
- unau
- unaudible
- unaudited
- unaugmented