Quote:could somebody let me know why 40 is 'forty' and not 'fourty'? Is there any reason for the disappearance of the 'u'?
You should try to get access to an etymological dictionary if you are curious about such things!
Briefly, they came from different Old Saxon words, then shared the same beginning "fou", then moved apart again later.
ME. is Middle English, the language of England between about
1100 and 1500 A.D.
AS. is Anglo-Saxon, the language of the Saxon tribes that invaded
England in the 5th and 6th centuries - from about 600 A.D.
OS. is Old Saxon, the language of the original Saxon tribes of
northwest Germany between the Rhine and the Elbe rivers.
forty: ME. forti, fourti, fowerti, from AS. feowertig;
akin to OS. fiwartig, fiartig
four: ME. four, fower, feower, from AS. feower;
akin to OS. fiwar
So four and forty were different words starting a long time ago but
were spelled with the same beginning in Old Saxon and Anglo-Saxon
and part of Middle English. Somewhere along the way during the
Middle English era the simpler spelling of forty took hold and has continued ever since.