wǔ
dance
Originally written as 無, which is a pictograph of a person dancing, with ox tails or bird feathers hanging from his arms, to pray for rain. The 舛 (two feet) component was later added to emphasize the action of dancing after 無 was phonetically borrowed for different meanings.
Oracle script
Bronze script
Seal script
Clerical script
Regular script
季旭昇《說文新證》p.472
林志強《《文源》評注》p.203