Answer: icanso

AnswerCrossword Clue
ICANSOSchoolyard comeback
ICANSOFirm affirmation
ICANSOPlayground affirmation
ICANSOPlayground rebuttal
ICANSODetermined response
ICANSOArgumentative comeback
ICANSOReply to "No way!"
ICANSODaredevil's retort
ICANSORejoinder to a doubter
ICANSOResponse to a naysayer
ICANSOPlayground rejoinder
ICANSOPlayground comeback
ICANSOInsistent exclamation
ICANSOComeback to a skeptic
ICANSOResponse to a doubter
ICANSOResponse to a doubter of one's abilities
ICANSOResponse to a doubting Thomas
ICANSO"Just watch me!"
ICANSOPlayground retort
ICANSOKid's retort