corroborant
adjective
cor·rob·o·rant kə-ˈrä-bə-rənt 
archaic
: having an invigorating effect —used of a medicine
Word History
First Known Use
1626, in the meaning defined above
- unnecessary
- unnecessitated
- unneeded
- unneedful
- unnegotiable
- unneighbored
- unneighborliness
- unneighborlinesses
- unneighborly
- unneighboured
- unneighbourliness
- unneighbourlinesses
- unneighbourly
- unnerve
- unnerved
- unnerves
- unnerving
- unnervingly
- unnest
- unnested
- unnesting
- unnests
- unneurotic
- unneutral
- unneutrality