Definition of a or the world of in English:

a (or the) world of

A very great deal of: there’s a world of difference between being alone and being lonely a bit of country air will do her the world of good
More example sentences
  • A simple nod, a raise of the hand or a flash of headlights can make the world of difference.
  • Having the right pair to suit your feet and your activity can make the world of difference.
  • I made good use of the pool and it made the world of difference to me and the baby.
huge amount, vast amount, enormous amount, good deal, great deal, abundance, wealth, profusion, mountain, immensity;
many, much, plenty, reams
informal heap, pile, lot, load, stack, ton, masses
British informal shedload, lashings
Australian/New Zealand informal swag
See parent entry: world