fed·er·a·tive 
(fĕdə-rā′tĭv, fĕdər-ə-, fĕdrə-)
(fĕdə-rā′tĭv, fĕdər-ə-, fĕdrə-)adj.
Forming, belonging to, or of the nature of a federation.
feder·a′tive·ly adv.
- supererogatory
- superfamily
- superfast
- super featherweight
- superfecta
- superfecundation
- superfetate
- superfetation
- superficial
- superficiality
- superficially
- superficialness
- superficies
- superfine
- superfineness
- superfluid
- superfluidity
- superfluity
- superfluous
- superfluously
- superfluousness
- super flyweight
- super G
- supergalaxy
- supergene