Synonyms of up-and-coming

2 Syllables
hungry, striving, climbing, coming, gumptious, soaring, eager
3 Syllables
ambitious, go-getter, likeliest, likelier, likely, high-reaching, promising, succeeding, go-ahead
4 Syllables
progressive, inferable, enterprising, determined, believeable, supposable
5 Syllables
entrepreneurial, conjecturable