Answer: sayswho

AnswerCrossword Clue
SAYSWHO

"Oh, yeah?"

SAYSWHO

Defiant words

SAYSWHO

"That's a lie!"

SAYSWHO
Skeptic's retort
SAYSWHO
"According to what authority?"
SAYSWHO"Oh yeah?"
SAYSWHOSkeptical retort
SAYSWHO"And what's your source?"
SAYSWHOSkeptic's comeback
SAYSWHOResponse to a dubious assertion
SAYSWHOSkeptical reply to a supposed fact
SAYSWHOSkeptical response