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speed up

   Also found in: Idioms, Encyclopedia, Wikipedia, Hutchinson 0.06 sec.
speed up
Verb
to accelerate or cause to accelerate
USAGE: The past tense and past participle of speed up is speeded up not sped up.
ThesaurusLegend:  Synonyms Related Words Antonyms
Verb1.speed upspeed up - move faster; "The car accelerated"  
accelerate, quicken, speed
brisk, brisk up, brisken - become brisk; "business brisked up"
deepen, intensify - become more intense; "The debate intensified"; "His dislike for raw fish only deepened in Japan"
2.speed upspeed up - cause to move faster; "He accelerated the car"
accelerate, speed
alter, change, modify - cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue"


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