Definitions:

1. a rate, usually rapid, at which something happens noun
   • The project advanced with gratifying speed.
2. move very fast verb
   • The runner zipped past us at breakneck speed
3. travel at an excessive or illegal velocity verb
   • I got a ticket for speeding

Synonyms:

• accelerate
• amphetamine
• belt along
• bucket along
• cannonball along
• f number
• fastness
• focal ratio
• hasten
• hie
• hotfoot
• hurry
• pelt along
• pep pill
• quicken
• race
• rush
• rush along
• speed up
• speeding
• step on it
• stop number
• swiftness
• travel rapidly
• upper
• velocity
• zip

NearBy Words:

• speed-reading
• speedboat
• speeder
• speedily
• speediness
• speeding
• speedometer
• speedskater
• speedup
• speedway
• speedwell
• speedy