Word
fastest
US/ˈfæstəst/
UK/fˈɑːstəst/
Definitions
01highest speed
adj. quicker than all others in a group.
adj. surpassing all others in speed, velocity, or rate of motion.
“The cheetah is the fastest land animal in the world.”
“The engineering team focused on developing the fastest processor currently available on the consumer market.”
Usage
Used with the definite article 'the' before a noun.
Pitfall
He is the most fastest runner.
He is the fastest runner.
Do not use 'most' with 'fastest' because the '-est' ending already means 'most'.
Synonyms
Antonyms
02moving most quickly
adv. moving or working at the highest possible speed.
adv. performing an action with the greatest rapidity compared to others.
“Out of all the students, Maria finished the test fastest.”
“The data suggests that the economy is growing fastest in the technology and renewable energy sectors.”
Usage
Often follows the verb it modifies.
Teaching tip
While 'most quickly' is also correct, 'fastest' is very common in spoken English as an adverb.
Synonyms
Antonyms