qù
go away
Depicts opening the mouth (口) wide (大) to let a yawn leave the mouth. Original form of 呿.
Evolution

Oracle script
(~1250-1000 BC)
Bronze script
Late Spring and Autumn (~500 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Regular script
ModernDefinitions
qù
go away, leave, depart; to go; to go to (a place); (of a time etc) last; just passed; to send; to remove; to get rid of; to reduce; to be apart from in space or time; to die (euphemism); to play (a part); (when used either before or after a verb) to go in order to do sth; (after a verb of motion indicates movement away from the speaker); (used after certain verbs to indicate detachment or separation)
Component uses
Iconic component in 1 character (1 verified)
Simplified component in 1 character (1 verified)
Sources
季旭昇《說文新證》p.421