challenging

challenging has 4 senses in the JumbleFix dictionary. Letters: 11.

Definitions

• p. pr. & vb. n.. of Challenge
• a.. requiring full use of your abilities or resources; "ambitious schedule"; "performed the most challenging task without a mistake"
• a.. disturbingly provocative; "an intriguing smile"
• a.. stimulating interest or thought; "a challenging hypothesis"; "a thought-provoking book"