Additions Synonyms and Antonyms
            An architectural extension
        
 
            (Noun)
        
Synonyms:
 
            A quantity that is added
        
 
            (Noun)
        
Synonyms:
 - increases
- augmentations
- extensions
- appendices
- appendages
- accretions
- gains
- accessions
- supplements
- wings
- appreciations
- attachments
- summations
- appurtenances
- suffixes
- accessories
- riders
- postscripts
- reinforcements
- enhancements
- adjuncts
- acquisitions
- inserts
- calculations
- increments
- commissions
- bonuses
- profits
- annexations
- addenda
- raises
- interests
Antonyms:
 
            The act of adding one thing to another
        
 
            (Noun)
        
Synonyms:
 
            The arithmetic operation of summing; calculating the sum of two or more numbers
        
 
            (Noun)
        
Synonyms:
 - plusses
- summations