Synonyms of instantly

instantly 1 of 2

adverb

ˈin(t)-stənt-lē 

as in immediately

without delay

showed leadership by reacting instantly to the crisis

Synonyms & Similar Words

• immediately
• promptly
• now
• directly
• instantaneously
• quickly
• right
• suddenly
• shortly
• soon
• away
• forthwith
• straightaway
• at once
• bang
• on the spot
• off the bat
• right now
• incontinently
• in no time
• right off
• right away
• straightway
• presently
• on the double
• straight off
• rapidly
• swiftly
• abruptly
• headlong
• momentarily
• instanter
• PDQ
• on a dime
• readily
• pronto
• freely
• plumb
• quick
• speedily
• fast
• unexpectedly
• hastily
• briskly
• swift
• impulsively
• presto
• recklessly
• apace
• fleetly
• impetuously
• rashly
• punctually
• opportunely
• seasonably
• anon
• posthaste
• snappily
• full tilt
• exactly

Antonyms & Near Antonyms

• slowly
• late
• tardily

instantly

2 of 2

conjunction

as in when

just at the moment that

we realized there would be problems instantly we saw the final report

Synonyms & Similar Words

• when
• immediately
• once
• as soon as

Antonyms & Near Antonyms

• after
• since
• directly

Example Sentences

Recent Examples of instantly

Adverb

Removing the 16 siblings from their home also instantly more than doubled the number of children in temporary custody in Vinton County — a daunting prospect for a county with about 12,600 residents and the smallest budget among Ohio’s 88 counties. — ABC News, 10 July 2026

An electric fly swatter or sprays like Raid Flying Insect Killer can kill flies instantly. — Faith Wakefield, USA Today, 10 July 2026

This instantly alerts nearby Deadite Jessica to the dagger's presence, prompting her to turn her attention to eliminating the Price family and destroying it. — Megan McCluskey, Time, 10 July 2026

This was instantly corrected against Seattle, as the Dream made 23 of 26 free throws. — Micahya Costen, AJC.com, 10 July 2026