The phrase "a fast exciting" is not correct in standard written English as it lacks a conjunction or proper structure to connect the two adjectives.
You can use it when describing something that is both fast and exciting, but it needs to be rephrased for clarity.
Example: "The race was a fast and exciting event that kept everyone on the edge of their seats."
Alternatives: "a thrilling fast-paced" or "an exhilarating quick".
The process of putting on the show has been a fast, exciting learning curve.
This is a fast, exciting, high-scoring game featuring the world's best players, and we're convinced its time has come".
The Penguins are one of the best offensive teams in the N.H.L., playing a fast, exciting style that highlights Crosby's ability as a passer, and Malkin's and Marian Hossa's ability as scorers.
Arturo O'Farrill, who is the son of the composer and arranger Chico O'Farrill and the pianist in his band, is making strides as a band leader: he is a fast, exciting pianist in the straight-ahead jazz and Latin idioms, and he, like seemingly everyone else in the last few months, has begun working with the exciting young Cuban drummer Dafnis Prieto.
While the other, Borussia Dortmund, struts across Europe with a reputation of fast, exciting soccer from a choir of young starlets that seems to precede it in every foreign ground it travels to.
With one of the league's finest perimeter threesomes (Dwyane Wade, Lamar Odom and Eddie Jones) leading a fast and exciting attack, the Heat will roll.
Last season Caleb Porter took an underwhelming Portland Timbers side, and turned them into a fast and exciting team full of both midfield bite and creativity.
Perhaps because of the style in which the book is written, which makes it a fast and exciting read, there simply isn't enough detail on the two great crises of Morgan's editorship of the Daily Mirror - the City Slickers affair and the decision to publish the fake pictures of British troops abusing Iraqi prisoners.
"She is looking fantastic and is sure to be a fast and exciting ride," said double Olympic silver medal-winning sailor Ian Walker, a member of Itchenor Sailing Club in Chichester, West Sussex.
In the role of Executive Assistant at my previous jobs, I wore many hats – serving as a personal manager, executive administrative assistant, travel planner, staff liaison, client relationship builder and public relations coordinator, in a fast paced, exciting environment.
It was a week for worrying about the dark side of our cool, fast, exciting, heedless new technologies.
