| widening(noun, advance, increase, delay, progress) |
| acceleration(noun, advance, increase, progress, growth) |
| accessory(noun, extra, supplement, appendage, adjunct) |
| appendage(noun, increase, delay, development, spread) |
| appendix(noun, increase, delay, development, spread) |
| augment(noun, verb, act, increase, swell) |
| complement(noun, match, extra, foil, companion) |
| enrichment(noun, change, advance, increase, gain) |
| heightening(noun, advance, increase, rise, progress) |
| intensification(noun, advance, increase, raise, gain) |
| jump(noun, act, advance, increase, boost) |
| plus |
| upturn(noun, act, advance, increase, raise) |
| acquisition(noun, increase, gain, return, benefit) |
| broadening(noun, increase, delay, development, spread) |
| burgeoning(noun, raise, gain, rise, development) |
| crescendo(noun, expansion) |
| dilation(noun, increase, development, spread, growth) |
| distension(noun, increase, delay, development, spread) |
| extra(noun, addition, complement, supplement, appendage) |