adverb (r)

• without bounds(adv.all)

  Example:
  He is infinitely wealthy.
  

  Synonym:
  boundlessly, immeasurably
  

  source: wordnet30
• continuing forever without end(adv.all)

  Example:
  There are infinitely many possibilities.
  

  Synonym:
  endlessly
  Antonym:
  finitely
  

  source: wordnet30
• Without bounds or limits; beyond or below assignable limits; as, an infinitely large or infinitely small quantity.(adverb)

  source: webster1913