Challenging
Related Definitions
[adj] requiring full use of your abilities or resources; "ambitious schedule"; "performed the most challenging task without a mistake"
[adj] disturbingly provocative; "an intriguing smile"
[adj] stimulating interest or thought; "a challenging hypothesis"; "a thought-provoking book"
Related Terms
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, impude