complemental

adjective5

1. •
   Of the nature of a complement; completing.
2. •
   Complementary.
3. •
   (no longer used) Additional; supplemental, accessory; ancillary.
4. •
   (no longer used) Of persons: accomplished; talented; experienced.
5. •
   (no longer used) Of the nature of a ceremony that is not essential but accessory; ceremonial; ceremonious; formal.