additive (n.)
- accession
- accessory
- accompaniment
- addendum
- addition
- adjunct
- adjuvant
- annex
- annexation
- appanage
- appendage
- appurtenance
- attachment
- augmentation
- chain
- coda
- complement
- component
- concomitant
- constituent
- continuation
- corollary
- extension
- extrapolation
- fixture
- increase
- increment
- offshoot
- pendant
- reinforcement
- supplement
- tailpiece
additive (adj.)
- accessory
- accumulative
- additional
- adjunct
- adjuvant
- appendant
- appurtenant
- chain
- concomitant
- constituent
- cumulative
- elemental
- pendant
- summational
- summative
