instant
1. [ noun ] a very short time (as the time it takes the eye blink or the heart to beat)
Synonyms: wink split_second twinkling New_York_minute trice flash jiffy heartbeat blink_of_an_eye
Examples:

"if I had the chance I'd do it in a flash"

Related terms: moment flash
2. [ noun ] a particular point in time
Synonyms: moment minute second
Examples:

"the moment he arrived the party began"

Related terms: point time climax pinpoint eleventh_hour moment_of_truth moment_of_truth psychological_moment
3. [ adjective ] occurring with no delay
Synonyms: instantaneous
Examples:

"relief was instantaneous" "instant gratification"

Related terms: fast
4. [ adjective ] in or of the present month
Synonyms: inst
Examples:

"your letter of the 10th inst"

Related terms: present
5. [ adjective ] demanding attention
Synonyms: insistent crying exigent clamant
Examples:

"clamant needs" "a crying need" "regarded literary questions as exigent and momentous"- H.L.Mencken "insistent hunger" "an instant need"

Related terms: imperative
Similar spelling:   instantly
  instigant
  inst
  instalment
  instinct
  inkstand
  instancy
  instance
  institute
  instil
  instep
  inmost
  instar
  instal
  incitation
  in-situ
  in_situ
  instead
  instill
  install
  inositol
  instroke
  instruct
  in_stages
  inset
  instigate
  ingot
  in_style
  in_store
  in_stock