Synonyms:
- accession,
- addition,
- adjunct,
- adjunction,
- affixation,
- agglutination,
- annexation,
- attachment,
- augmentation,
- increase,
- joining,
- junction,
- juxtaposition,
- prefixation,
- reinforcement,
- suffixation,
- superaddition,
- superfetation,
- superjunction,
- superposition,
- uniting