Definition of undaunting:
(adj) :
Discouraging; inspiring fear.
(adj) :
Intimidatingly impressive; awe-inspiring, overwhelming.
(adj) :
Appearing to be difficult; challenging.
(n) :
The act of discouraging or intimidating; discouragement, intimidation.
(n) :
gerund of daunt.
(n) :
The act of defeating, overcoming, or overwhelming.