yòu
young, infant
Someone who is young has weak (幺) strength (力). 幺 represents the sound.
Components
Evolution

Oracle script
(~1250-1000 BC)
Bronze script
Late Western Zhou (~800 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Qin dynasty (221-206 BC)Regular script
ModernDefinitions
Component uses
Meaning component in 1 character (0 verified)
Sources
李学勤《字源》p.338