forty

Four tally marks; compare ten , twenty 廿, and thirty 

Components
一 meaning component

  Meaning component

  

one

Evolution

卌 Oracle script (~1250-1000 BC)

Oracle script

(~1250-1000 BC)
卌 Bronze script Mid Western Zhou (~900 BC)

Bronze script

Mid Western Zhou (~900 BC)
卌 Clerical script Eastern Han dynasty (25-220 AD)

Clerical script

Eastern Han dynasty (25-220 AD)
卌 Regular script Modern

Regular script

Modern
Definitions

 

forty, fortieth; forty