| supplement(noun, increase, extra, addition) |
| add-on(noun, increase, extra, addition) |
| added feature(noun, expression, increase, extra, addition) |
| addendum(noun, increase, extra, addition, additive) |
| addition(noun, increase, extra, additive) |
| additional |
| additive(noun, increase, extra, addition) |
| adjunct(noun, increase, extra, addition) |
| annex(noun, increase, extra, addition) |
| appendage(noun, increase, extra, addition) |
| appendix(noun, increase, extra, addition, additive) |
| bell(noun, increase, extra, addition, additive) |
| bells and whistles(noun, expression, idiom, increase, extra) |
| codicil(noun, increase, extra, addition, additive) |
| complement(noun, increase, extra, addition, additive) |
| continuation(noun, increase, extra, addition, additive) |
| enhancement(noun, increase, extra, addition) |
| extension(noun, increase, extra, addition) |
| extra(noun, increase, addition, additive) |
| increase(noun, extra, addition) |