bài
be defeated
Phonosemantic compound. 攵 represents the meaning and 贝 represents the sound. Simplified form of 敗.
Evolution

Oracle script
(~1250-1000 BC)
Bronze script
Late Western Zhou (~800 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Traditional script
ModernSimplified script
ModernDefinitions
Sources