complemental

Of the nature of a complement; completing.

Complementary.

Additional; supplemental, accessory; ancillary.

[I]t is an errour worſe than hereſie, to adore the complementall and circumſtantiall piece of felicity, and undervalue thoſe perfections and eſſential points of happineſſe, wherein we reſemble our Maker.

Of the nature of a ceremony that is not essential but accessory; ceremonial; ceremonious; formal.

Of persons: accomplished; talented; experienced.