Antonyms of verb delay

1 of 4 senses of delay

Sense 1
delay, detain, hold up -- (cause to be slowed down or delayed; "Traffic was delayed by the bad weather"; "she delayed the work that she didn't want to perform")
       Antonym of rush (Sense 3)
      => rush, hurry -- (urge to an unnatural speed; "Don't rush me, please!")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb delay

4 senses of delay

Sense 1
delay, detain, hold up -- (cause to be slowed down or delayed; "Traffic was delayed by the bad weather"; "she delayed the work that she didn't want to perform")
       => decelerate, slow, slow down, slow up, retard -- (lose velocity; move more slowly; "The car decelerated")

Sense 2
delay -- (act later than planned, scheduled, or required; "Don't delay your application to graduate school or else it won't be considered")
       => wait, hold off, hold back -- (wait before acting; "the scientists held off announcing their results until they repeated the experiment")

Sense 3
stay, detain, delay -- (stop or halt; "Please stay the bloodshed!")
       => check, retard, delay -- (slow the growth or development of; "The brain damage will retard the child's language development")

Sense 4
check, retard, delay -- (slow the growth or development of; "The brain damage will retard the child's language development")
       => change, alter, 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")

Antonyms of adj delayed

1 sense of delayed

Sense 1
delayed -- (not as far along as normal in development)

INDIRECT (VIA retarded) -> precocious -- (characterized by or characteristic of exceptionally early development or maturity (especially in mental aptitude); "a precocious child"; "a precocious achievement")

Similarity of adj delayed

1 sense of delayed

Sense 1
delayed -- (not as far along as normal in development)
       => retarded (vs. precocious) -- (relatively slow in mental or emotional or physical development; "providing a secure and sometimes happy life for the retarded")