| acquiring |
| adding to(expression, advance, increase, progress, development) |
| addition(advance, increase, progress, development, growth) |
| adulthood(advance, increase, progress, development, growth) |
| advancement(noun, advance, increase, gain, progress) |
| ageing |
| augmentation(noun, advance, increase, progress, development) |
| augmenting(advance, increase, progress, development, growth) |
| bestriding |
| bigging |
| blooming(lush, luxuriant, verdant, increasing, verduous) |
| boarding |
| boost(noun, advance, increase, progress, development) |
| bosky(lush, luxuriant, blooming, verdant, increasing) |
| budding(adjective, lush, luxuriant, promising, rising) |
| buildup(noun, advance, increase, progress, development) |
| burgeoning(lush, luxuriant, promising, rising, verdant) |
| bursting forth(expression, promising, blooming, flowering, developing) |
| callow(lush, luxuriant, verdant) |
| chrysalis(increase, progress, growth, expansion) |