Answer: cantoo

AnswerCrossword Clue
CANTOO

Assertion of ability

CANTOO

Braggart's insistence

CANTOO

Assertive retort

CANTOO
Defiant response
CANTOO
Braggart's assertion
CANTOOPlayground retort
CANTOOSchoolyard "I'll show you!"
CANTOOPlayground comeback
CANTOOResponse to a discouraging comment
CANTOOShout in a playground debate
CANTOO"Oh no? I'll show you!"