Answer: wavegoodbye

AnswerCrossword Clue
WAVEGOODBYEParticipate in a send-off
WAVEGOODBYESignal to from the pier, perhaps
WAVEGOODBYEMake a parting gesture
WAVEGOODBYESignal sayonara
WAVEGOODBYESignal one's parting
WAVEGOODBYESignify one's leaving
WAVEGOODBYE"Say" farewell silently
WAVEGOODBYEGive a farewell performance?