[trump card] {n.} Something kept back to be used to win […]

[up-and-coming] {adj. phr.} Bound toward success; upwardly mobile; progressive; ambitious. * […]

[upset the applecart] or [upset one's applecart] {v. phr.}, {informal} To […]

[wait on] or [wait upon] {v.} 1. To serve. * /Sue […]

[with flying colors] {adv. phr.} With great or total success; victoriously. […]

[work out] {v. phr.} 1. To find an answer to. * […]