Forty
/ˈfɔːrti/noun
The number equivalent to 4 × 10.
Did you know?English forty is a Germanic number word built from the old base-10 system, and its odd spelling survived because English preserved a special form rather than simply sounding it out.
Etymological Timeline
Proto-Indo-European
PIE
*kʷetwóres
“four”
Proto-Germanic
PGmc
*fedwōr
“four”
Old English
OE
fēowertig
“forty”
Middle English
ME
fourty / fourtye
“forty”
Modern English
English
forty
“forty”