Vowels 15 and 20, /ɔɪ/ versus /ʊə/    11 pairs      [boyboor.html]

The /ɔɪ/ diphthong is spelled <oi> and <oy>. The /ʊə/ diphthong is spelled <ure>, <oor> or <our>.

This is a contrast between two diphthongs with different starting positions and direction of movement. It is not a problem for learners.

Interesting pairs include:

alloy allure
doily dourly

The density figure is 1.4%. The set makes 6 semantic contrasts giving a loading of 54%.

alloy allure
  alloyed allured
  alloys allures
boy boor  
  boys boors 
buoy boor
  buoys boors  
doily dourly
toy tour
  toyed toured 
  toys tours 

John Higgins, Shaftesbury, December 2009