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Meaning of instantaneous
The primary meaning of the word "instantaneous" is related to something happening or done immediately.
Etymology of instantaneous
The word "instantaneous" has its roots in the Latin words "instantem," meaning "standing upon" or "urgent," and the suffix "-ous," which forms adjectives
Historically, the term has been used in English since the 15th century to describe things that occur without delay or happen in a very short time frame
Synonyms
immediate
prompt
instant
speedy
swift
rapid
quick
fast
brisk
hurried
hasty
sudden
abrupt
fleeting
transitory
ephemeral
momentary
brief
transient
flash
split-second
swift
expeditious
lightning-fast
meteoric
prompt
ready
instantaneous
simultaneous
coincident
concurrent
immediate
direct
swift
speedy
fleet
nimble
quick
brusque
curt
short
sharp
sudden
Definitions
- Happening or done immediately, without delay
- * Existing or lasting for a very short time
Usage Examples
- The instantaneous response to the emergency was commendable
- * The camera captures instantaneous images of the moving object
- * The effect of the medication was instantaneous, and the patient started feeling better immediately
Antonyms
delayed
slow
gradual
late
sluggish
lethargic
tardy
dilatory
languid
lackadaisical
indolent
inactive
inert
dormant
inactive
slothful
torpid
apathetic
sluggish
unresponsive
unreactive
passionless
slow-moving
plodding
laborious
time-consuming
prolonged
protracted
extended
lengthy