1. superlative form of 'pacy'; moving or happening at the fastest or most rapid pace
Usage: informal; chiefly British

Examples

• That was the paciest match of the entire tournament.
• The paciest runners in the relay team were chosen for the final leg.
• She prefers the paciest action films over slow dramas.
• The paciest section of the river is dangerous for swimmers.
• His paciest novel kept readers turning pages late into the night.