adverb (r)

• without delay or hesitation; with no time intervening(adv.all)

  Example:
  He answered immediately.
  

  Synonym:
  at once, directly, forthwith, instantly, like a shot, now, right away, straight off, straightaway
  

  source: wordnet30
• near or close by(adv.all)

  Example:
  He passed immediately behind her.
  

  source: wordnet30
• bearing an immediate relation(adv.all)

  Example:
  This immediately concerns your future.
  

  source: wordnet30
• In an immediate manner; without intervention of any other person or thing; proximately; directly; -- opposed to mediately; as, immediately contiguous.(adverb)

  source: webster1913