けしからぬ (translations)→ blamed unconscionable
ふてぶてしく (translations)→ brazenly impudently
生意気 (translations)→ insolence pertness wiseass
生意気な (translations)→ irreverent mouthy perky presuming priggish sassy saucy
不遜な (translations)→ arrogant blasphemous cavalier haughty