powder-keg (noun) powder keg: explosive situation
Sinonime: VIP, achiever, affluential, catalyst, doer, dynamo, enterprising person, entrepreneur, generator, go-getter, heavy hitter, heavyweight, leader, lightning rod, man of influence, mover, palpable presence, pathfinder, player*, presence, producer, rising star, spark plug, trailblazer, upstart, wheeler and dealer, whip