(p. pr. & vb. n.) of Challenge.

alluring arrogant audacious bold brash brassy brazen bumptious cheeky cocky contemptuous daring defiant defying derisive disdainful disregardful encouraging energizing exciting galvanic galvanizing greatly daring impertinent impudent insolent inviting pert piquant prompting provocative provoking regardless of consequences rousing saucy stimulant stimulating stimulative stirring